Question: who played the mother in the thorn birds
[{'answer': 'Rachel Ward', 'provenance': [{'wikipedia_id': '10706404', 'title': 'The Thorn Birds (miniseries)', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]