query: SELECT role_description FROM Staff_Roles WHERE role_code  =  'researcher'
question: What-all of the researcher role is the complete description.
query_toks: SELECT role_description FROM Staff_Roles WHERE role_code = 'researcher '
query_toks_no_value: select role_description from staff_roles where role_code = value
question_toks: What-all of the researcher role is the complete description.