Database: scholar
Question: how many of dan klein 's papers cite michael i. jordan
SQL: select distinct count ( t5.citingpaperid ) from writes as t3 join author as t2 on t3.authorid  =  t2.authorid join cite as t5 on t3.paperid  =  t5.citedpaperid join writes as t4 on t4.paperid  =  t5.citingpaperid join author as t1 on t4.authorid  =  t1.authorid where t2.authorname  =  "michael i. jordan" and t1.authorname  =  "dan klein";