query: select t1.fname from student as t1 join has_pet as t2 on t1.stuid  =  t2.stuid join pets as t3 on t3.petid  =  t2.petid where t3.pettype  =  'cat' intersect select t1.fname from student as t1 join has_pet as t2 on t1.stuid  =  t2.stuid join pets as t3 on t3.petid  =  t2.petid where t3.pettype  =  'dog'
question: Find the first name of students have both cat and dog pet.
query_toks: select t1.fname from student as t1 join has_pet as t2 on t1.stuid = t2.stuid join pets as t3 on t3.petid = t2.petid where t3.pettype = "cat" intersect select t1.fname from student as t1 join has_pet as t2 on t1.stuid = t2.stuid join pets as t3 on t3.petid = t2.petid where t3.pettype = "dog"
query_toks_no_value: select t1 . fname from student as t1 join has_pet as t2 on t1 . stuid = t2 . stuid join pets as t3 on t3 . petid = t2 . petid where t3 . pettype = value intersect select t1 . fname from student as t1 join has_pet as t2 on t1 . stuid = t2 . stuid join pets as t3 on t3 . petid = t2 . petid where t3 . pettype = value
question_toks: Find the first name of students have both cat and dog pet.