Question: who is considered the custodial parent in joint custody
[{'answer': 'both parents', 'provenance': [{'wikipedia_id': '3153998', 'title': 'Child custody', 'start_paragraph_id': 5, 'start_character': 42, 'end_paragraph_id': 5, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Legal custody.\n'}]}]