Question: what is the most important job of the skull
[{'answer': 'protective cavity for the brain', 'provenance': [{'wikipedia_id': '168859', 'title': 'Skull', 'start_paragraph_id': 1, 'start_character': 120, 'end_paragraph_id': 1, 'end_character': 151, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'supports the structures of the face'}, {'provenance': [{'wikipedia_id': '168859', 'title': 'Skull', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 606, 'bleu_score': 0.923675270965665, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 346835937632101372}, 'section': 'Section::::Abstract.'}]}]