query: select cell_mobile_number from students where first_name  =  'timmothy' and last_name  =  'ward'
question: What-all that mobile phone number of that student name Timmothy Ward?
query_toks: select cell_mobile_number from students where first_name = "timmothy" and last_name = "ward"
query_toks_no_value: select cell_mobile_number from students where first_name = value and last_name = value
question_toks: What-all that mobile phone number of that student name Timmothy Ward?