query: SELECT Air_Date FROM TV_series WHERE Episode = "A Love of a Lifetime";
question: When doing a episode "The Love of the Lifetime" airs?
query_toks: SELECT Air_Date FROM TV_series WHERE Episode = `` A Love of a Lifetime '' ;
query_toks_no_value: select air_date from tv_series where episode = value
question_toks: When doing a episode "The Love of the Lifetime" airs?