CREATE TABLE table_name_18 (hometown_school VARCHAR, team VARCHAR, player VARCHAR)

What was the home town of Bob Geren, picked by the San Diego Padres?
SELECT hometown_school FROM table_name_18 WHERE team = "san diego padres" AND player = "bob geren"
SELECT "hometown_school" FROM "table_name_18" WHERE "bob geren" = "player" AND "san diego padres" = "team"