Database: scholar
Question: recent papers written by sanjeev arora
SQL: select distinct t1.keyphrasename  ,  t3.year from paperkeyphrase as t2 join keyphrase as t1 on t2.keyphraseid  =  t1.keyphraseid join paper as t3 on t3.paperid  =  t2.paperid join writes as t4 on t4.paperid  =  t3.paperid join author as t5 on t4.authorid  =  t5.authorid where t5.authorname  =  "sanjeev arora" order by t3.year desc;