CREATE TABLE authorship (paperid VARCHAR, instid VARCHAR)
CREATE TABLE inst (instid VARCHAR, name VARCHAR)
CREATE TABLE papers (title VARCHAR, paperid VARCHAR)

How many papers are published by the institution 'Tokohu University'?
SELECT COUNT(DISTINCT t1.title) FROM papers AS t1 JOIN authorship AS t2 ON t1.paperid = t2.paperid JOIN inst AS t3 ON t2.instid = t3.instid WHERE t3.name = "Tokohu University"
SELECT COUNT(DISTINCT "t1"."title") FROM "papers" AS "t1" JOIN "authorship" AS "t2" ON "t1"."paperid" = "t2"."paperid" JOIN "inst" AS "t3" ON "Tokohu University" = "t3"."name" AND "t2"."instid" = "t3"."instid"