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

In 2010 what journal published an article about Trophic Cascade ?
SELECT DISTINCT paper.journalid FROM keyphrase, paper, paperkeyphrase WHERE keyphrase.keyphrasename = 'Trophic Cascade' AND paperkeyphrase.keyphraseid = keyphrase.keyphraseid AND paper.paperid = paperkeyphrase.paperid AND paper.year = 2010 GROUP BY paper.journalid
SELECT DISTINCT "paper"."journalid" FROM "keyphrase" JOIN "paperkeyphrase" ON "keyphrase"."keyphraseid" = "paperkeyphrase"."keyphraseid" JOIN "paper" ON "paper"."paperid" = "paperkeyphrase"."paperid" AND "paper"."year" = 2010 WHERE "keyphrase"."keyphrasename" = 'Trophic Cascade' GROUP BY "paper"."journalid"