query: SELECT DISTINCT T1.fname ,  T1.age FROM student AS T1 JOIN has_pet AS T2 ON T1.stuid  =  T2.stuid
question: What are the different first names and ages of the students do have pets?
query_toks: SELECT DISTINCT T1.fname , T1.age FROM student AS T1 JOIN has_pet AS T2 ON T1.stuid = T2.stuid
query_toks_no_value: select distinct t1 . fname , t1 . age from student as t1 join has_pet as t2 on t1 . stuid = t2 . stuid
question_toks: What are the different first names and ages of the students do have pets?