Task: Text to Code
Input (English): What are the cell phone numbers of the candidates that received an assessment code of "Fail"?
Output (English): SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = "Fail"