CREATE TABLE person (name TEXT, age DECIMAL, city TEXT, gender TEXT, job TEXT)
CREATE TABLE personfriend (name TEXT, friend TEXT, year DECIMAL)

What are the names of all of Bob's friends?
SELECT T1.name FROM person AS T1 JOIN personfriend AS T2 ON T1.name = T2.name WHERE T2.friend = 'Bob'
SELECT "T1"."name" FROM "person" AS "T1" JOIN "personfriend" AS "T2" ON "T1"."name" = "T2"."name" AND "T2"."friend" = 'Bob'