CREATE TABLE inst (instid DECIMAL, name TEXT, country TEXT)
CREATE TABLE authors (authid DECIMAL, lname TEXT, fname TEXT)
CREATE TABLE papers (paperid DECIMAL, title TEXT)
CREATE TABLE authorship (authid DECIMAL, instid DECIMAL, paperid DECIMAL, authorder DECIMAL)

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"