Database: academic
Question: return me the papers written by " H. V. Jagadish " and " Yunyao Li " on PVLDB .
SQL:
SELECT t6.title FROM publication AS t6 JOIN journal AS t4 ON t6.jid  =  t4.jid JOIN writes AS t3 ON t3.pid  =  t6.pid JOIN writes AS t5 ON t5.pid  =  t6.pid JOIN author AS t1 ON t5.aid  =  t1.aid JOIN author AS t2 ON t3.aid  =  t2.aid WHERE t2.name  =  "H. V. Jagadish" AND t1.name  =  "Yunyao Li" AND t4.name  =  "PVLDB";