Question: when did the first spawn comic come out
[{'answer': 'May 1992', 'provenance': [{'wikipedia_id': '29193', 'title': 'Spawn (comics)', 'start_paragraph_id': 1, 'start_character': 238, 'end_paragraph_id': 1, 'end_character': 246, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]