Question: when does agents of shield come back on 2018
[{'answer': 'May 18 , 2018', 'provenance': [{'wikipedia_id': '54022831', 'title': 'Agents of S.H.I.E.L.D. (season 5)', 'start_paragraph_id': 70, 'start_character': 302, 'end_paragraph_id': 70, 'end_character': 315, 'bleu_score': 1.0, 'section': 'Section::::Release.:Broadcast.\n'}]}, {'provenance': [{'wikipedia_id': '54022831', 'title': 'Agents of S.H.I.E.L.D. (season 5)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 131, 'bleu_score': 0.519870724196766, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3237945506815110384}, 'section': 'Section::::Abstract.'}]}]