Question: who plays melissa mccarthy's mother in life of the party
[{'answer': 'Jacki Weaver', 'provenance': [{'wikipedia_id': '51251925', 'title': 'Life of the Party (2018 film)', 'start_paragraph_id': 1, 'start_character': 397, 'end_paragraph_id': 1, 'end_character': 409, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]