optionally, do not output the relations, output the keys only
optionally, do not output the relations, output the keys only

misgeatgit/atomspace,roselleebarle04/opencog,rTreutlein/atomspace,yantrabuddhi/opencog,Selameab/opencog,sumitsourabh/opencog,rohit12/opencog,MarcosPividori/atomspace,tim777z/opencog,misgeatgit/atomspace,inflector/opencog,williampma/atomspace,sumitsourabh/opencog,rodsol/opencog,misgeatgit/opencog,yantrabuddhi/opencog,tim777z/opencog,anitzkin/opencog,tim777z/opencog,gavrieltal/opencog,Selameab/atomspace,sumitsourabh/opencog,AmeBel/opencog,iAMr00t/opencog,rohit12/opencog,jswiergo/atomspace,tim777z/opencog,prateeksaxena2809/opencog,ArvinPan/atomspace,kim135797531/opencog,Tiggels/opencog,tim777z/opencog,rTreutlein/atomspace,gavrieltal/opencog,inflector/opencog,eddiemonroe/atomspace,TheNameIsNigel/opencog,virneo/opencog,ruiting/opencog,cosmoharrigan/opencog,jlegendary/opencog,gaapt/opencog,ArvinPan/opencog,shujingke/opencog,rohit12/opencog,virneo/opencog,andre-senna/opencog,MarcosPividori/atomspace,ceefour/atomspace,sanuj/opencog,rodsol/atomspace,inflector/opencog,prateeksaxena2809/opencog,Selameab/atomspace,gavrieltal/opencog,cosmoharrigan/opencog,misgeatgit/opencog,AmeBel/opencog,cosmoharrigan/opencog,AmeBel/opencog,UIKit0/atomspace,jlegendary/opencog,inflector/atomspace,printedheart/opencog,zhaozengguang/opencog,inflector/opencog,sumitsourabh/opencog,Allend575/opencog,zhaozengguang/opencog,TheNameIsNigel/opencog,AmeBel/atomspace,roselleebarle04/opencog,eddiemonroe/opencog,UIKit0/atomspace,virneo/atomspace,rohit12/atomspace,printedheart/atomspace,cosmoharrigan/atomspace,roselleebarle04/opencog,jlegendary/opencog,ceefour/opencog,ceefour/opencog,printedheart/atomspace,roselleebarle04/opencog,misgeatgit/opencog,sanuj/opencog,prateeksaxena2809/opencog,kim135797531/opencog,Selameab/atomspace,gavrieltal/opencog,shujingke/opencog,kinoc/opencog,andre-senna/opencog,yantrabuddhi/opencog,printedheart/opencog,UIKit0/atomspace,andre-senna/opencog,prateeksaxena2809/opencog,rohit12/atomspace,zhaozengguang/opencog,gaapt/opencog,inflector/opencog,sanuj/opencog,ceefour/opencog,ArvinPan/opencog,anitzkin/opencog,sanuj/opencog,gavrieltal/opencog,cosmoharrigan/opencog,jlegendary/opencog,Selameab/opencog,kinoc/opencog,jswiergo/atomspace,iAMr00t/opencog,cosmoharrigan/atomspace,iAMr00t/opencog,AmeBel/atomspace,andre-senna/opencog,gaapt/opencog,rodsol/opencog,ceefour/atomspace,rohit12/opencog,TheNameIsNigel/opencog,rodsol/opencog,ruiting/opencog,kim135797531/opencog,eddiemonroe/opencog,kinoc/opencog,misgeatgit/opencog,Selameab/atomspace,zhaozengguang/opencog,eddiemonroe/opencog,ceefour/opencog,inflector/opencog,rTreutlein/atomspace,inflector/opencog,ArvinPan/atomspace,cosmoharrigan/atomspace,AmeBel/opencog,williampma/opencog,Allend575/opencog,virneo/atomspace,anitzkin/opencog,kim135797531/opencog,yantrabuddhi/atomspace,ceefour/atomspace,ruiting/opencog,roselleebarle04/opencog,kim135797531/opencog,ArvinPan/opencog,virneo/opencog,AmeBel/atomspace,misgeatgit/atomspace,sumitsourabh/opencog,ruiting/opencog,eddiemonroe/atomspace,rTreutlein/atomspace,kinoc/opencog,Tiggels/opencog,ceefour/opencog,ruiting/opencog,sanuj/opencog,iAMr00t/opencog,yantrabuddhi/opencog,virneo/opencog,misgeatgit/opencog,printedheart/atomspace,AmeBel/atomspace,iAMr00t/opencog,williampma/opencog,virneo/opencog,eddiemonroe/opencog,anitzkin/opencog,inflector/atomspace,ArvinPan/atomspace,virneo/opencog,roselleebarle04/opencog,ArvinPan/opencog,misgeatgit/atomspace,kinoc/opencog,cosmoharrigan/atomspace,rohit12/opencog,yantrabuddhi/opencog,tim777z/opencog,rodsol/atomspace,ceefour/atomspace,sumitsourabh/opencog,MarcosPividori/atomspace,rohit12/atomspace,jlegendary/opencog,rodsol/opencog,rohit12/opencog,Allend575/opencog,Allend575/opencog,misgeatgit/atomspace,roselleebarle04/opencog,TheNameIsNigel/opencog,andre-senna/opencog,williampma/atomspace,Selameab/opencog,AmeBel/atomspace,ceefour/opencog,UIKit0/atomspace,williampma/atomspace,prateeksaxena2809/opencog,gavrieltal/opencog,yantrabuddhi/atomspace,printedheart/opencog,gaapt/opencog,virneo/atomspace,kinoc/opencog,kim135797531/opencog,prateeksaxena2809/opencog,Tiggels/opencog,Tiggels/opencog,Tiggels/opencog,williampma/opencog,shujingke/opencog,eddiemonroe/opencog,shujingke/opencog,shujingke/opencog,virneo/atomspace,Tiggels/opencog,misgeatgit/opencog,virneo/opencog,ArvinPan/opencog,inflector/atomspace,gavrieltal/opencog,MarcosPividori/atomspace,yantrabuddhi/atomspace,williampma/opencog,printedheart/opencog,kinoc/opencog,andre-senna/opencog,anitzkin/opencog,rodsol/atomspace,AmeBel/opencog,jswiergo/atomspace,TheNameIsNigel/opencog,Allend575/opencog,gaapt/opencog,Allend575/opencog,inflector/atomspace,printedheart/opencog,rodsol/atomspace,anitzkin/opencog,printedheart/opencog,rTreutlein/atomspace,sanuj/opencog,prateeksaxena2809/opencog,iAMr00t/opencog,gaapt/opencog,misgeatgit/opencog,rodsol/opencog,williampma/opencog,zhaozengguang/opencog,eddiemonroe/atomspace,yantrabuddhi/atomspace,ruiting/opencog,williampma/atomspace,eddiemonroe/atomspace,AmeBel/opencog,andre-senna/opencog,shujingke/opencog,ArvinPan/atomspace,eddiemonroe/opencog,shujingke/opencog,yantrabuddhi/atomspace,ruiting/opencog,inflector/opencog,gaapt/opencog,TheNameIsNigel/opencog,sumitsourabh/opencog,rohit12/atomspace,Selameab/opencog,yantrabuddhi/opencog,eddiemonroe/atomspace,anitzkin/opencog,misgeatgit/opencog,inflector/atomspace,jswiergo/atomspace,Selameab/opencog,kim135797531/opencog,misgeatgit/opencog,rodsol/opencog,Allend575/opencog,AmeBel/opencog,eddiemonroe/opencog,williampma/opencog,printedheart/atomspace,cosmoharrigan/opencog,jlegendary/opencog,jlegendary/opencog,ceefour/opencog,cosmoharrigan/opencog,ArvinPan/opencog,zhaozengguang/opencog,Selameab/opencog,yantrabuddhi/opencog