Database: scholar
Question: What was the topic of best paper in 2012 EMNLP-CoNLL ?
SQL:
SELECT DISTINCT COUNT ( DISTINCT t4.citingpaperid )  ,  t1.keyphraseid  ,  t2.paperid FROM paper AS t2 JOIN cite AS t4 ON t2.paperid  =  t4.citedpaperid JOIN paperkeyphrase AS t1 ON t2.paperid  =  t1.paperid JOIN venue AS t3 ON t3.venueid  =  t2.venueid WHERE t2.year  =  2012 AND t3.venuename  =  "EMNLP-CoNLL" GROUP BY t2.paperid  ,  t1.keyphraseid ORDER BY COUNT ( DISTINCT t4.citingpaperid ) DESC;