Question: what episode is bag of weed family guy
[{'answer': '420', 'provenance': [{'wikipedia_id': '22122123', 'title': 'Episode 420 (Family Guy)', 'start_paragraph_id': 0, 'start_character': 8, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]