fix whe,n sparql endpoint do not support json results
fix whe,n sparql endpoint do not support json results

ofilangi/askomics,ofilangi/askomics,xgaia/askomics,ofilangi/askomics,askomics/askomics,xgaia/askomics,xgaia/askomics,askomics/askomics,xgaia/askomics,ofilangi/askomics,askomics/askomics,askomics/askomics