CREATE TABLE venue (venueid INT, venuename VARCHAR)
CREATE TABLE paperfield (fieldid INT, paperid INT)
CREATE TABLE dataset (datasetid INT, datasetname VARCHAR)
CREATE TABLE author (authorid INT, authorname VARCHAR)
CREATE TABLE field (fieldid INT)
CREATE TABLE paperdataset (paperid INT, datasetid INT)
CREATE TABLE cite (citingpaperid INT, citedpaperid INT)
CREATE TABLE writes (paperid INT, authorid INT)
CREATE TABLE paperkeyphrase (paperid INT, keyphraseid INT)
CREATE TABLE paper (paperid INT, title VARCHAR, venueid INT, year INT, numciting INT, numcitedby INT, journalid INT)
CREATE TABLE keyphrase (keyphraseid INT, keyphrasename VARCHAR)
CREATE TABLE journal (journalid INT, journalname VARCHAR)

what are most cited papers of tom mitchell and oren etzioni ?
SELECT DISTINCT author.authorname, cite.citedpaperid, COUNT(cite.citedpaperid) FROM author, cite, paper, writes WHERE author.authorname IN ('tom mitchell', 'oren etzioni') AND paper.paperid = cite.citedpaperid AND writes.authorid = author.authorid AND writes.paperid = paper.paperid GROUP BY cite.citedpaperid, author.authorname ORDER BY COUNT(cite.citedpaperid) DESC
SELECT DISTINCT "author"."authorname", "cite"."citedpaperid", COUNT("cite"."citedpaperid") FROM "author" CROSS JOIN "cite" JOIN "paper" ON "cite"."citedpaperid" = "paper"."paperid" JOIN "writes" ON "author"."authorid" = "writes"."authorid" AND "paper"."paperid" = "writes"."paperid" WHERE "author"."authorname" IN ('tom mitchell', 'oren etzioni') GROUP BY "cite"."citedpaperid", "author"."authorname" ORDER BY COUNT("cite"."citedpaperid") DESC NULLS LAST