CREATE TABLE inst (name VARCHAR2, instid VARCHAR2)
CREATE TABLE authorship (authid VARCHAR2, instid VARCHAR2)
CREATE TABLE authors (authid VARCHAR2, fname VARCHAR2, lname VARCHAR2)

What is the name of the institution that 'Matthias Blume' belongs to?
SELECT DISTINCT t3.name FROM authors AS t1 JOIN authorship AS t2 ON t1.authid = t2.authid JOIN inst AS t3 ON t2.instid = t3.instid WHERE t1.fname = "Matthias" AND t1.lname = "Blume"
SELECT DISTINCT "t3"."name" FROM "authors" "t1" JOIN "authorship" "t2" ON "t1"."authid" = "t2"."authid" JOIN "inst" "t3" ON "t2"."instid" = "t3"."instid" WHERE "Blume" = "t1"."lname" AND "Matthias" = "t1"."fname"