Question: who plays gavin's mum in gavin and stacey
[{'answer': 'Alison Steadman', 'provenance': [{'wikipedia_id': '25831483', 'title': 'List of Gavin & Stacey characters', 'start_paragraph_id': 1, 'start_character': 375, 'end_paragraph_id': 1, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25831483', 'title': 'List of Gavin & Stacey characters', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 838, 'bleu_score': 0.9687635332632951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13524652752433213839}, 'section': 'Section::::Abstract.'}]}]