Context: CREATE TABLE has_pet (stuid VARCHAR, petid VARCHAR); CREATE TABLE pets (petid VARCHAR, pettype VARCHAR); CREATE TABLE student (stuid VARCHAR, sex VARCHAR)
Question: Find the number of dog pets that are raised by female students (with sex F).
Answer: SELECT COUNT(*) FROM student AS T1 JOIN has_pet AS T2 ON T1.stuid = T2.stuid JOIN pets AS T3 ON T2.petid = T3.petid WHERE T1.sex = 'F' AND T3.pettype = 'dog'