Database: scholar
Question: How many papers related to deep reinforcement learning in nips ?
SQL:
SELECT DISTINCT COUNT ( t3.paperid ) FROM paperkeyphrase AS t2 JOIN keyphrase AS t1 ON t2.keyphraseid  =  t1.keyphraseid JOIN paper AS t3 ON t3.paperid  =  t2.paperid JOIN venue AS t4 ON t4.venueid  =  t3.venueid WHERE t1.keyphrasename  =  "deep reinforcement learning" AND t4.venuename  =  "nips";