fix context tests (words, not chars)
fix context tests (words, not chars)

math4youbyusgroupillinois/givinggraph,math4youbyusgroupillinois/givinggraph,dssg/givinggraph,dssg/givinggraph,math4youbyusgroupillinois/givinggraph,erichilarysmithsr/givinggraph,dssg/givinggraph,erichilarysmithsr/givinggraph,erichilarysmithsr/givinggraph