Question: the most abundant mineral group in earth's crust is
[{'answer': 'silicate minerals', 'provenance': [{'wikipedia_id': '19053', 'title': 'Mineral', 'start_paragraph_id': 36, 'start_character': 226, 'end_paragraph_id': 36, 'end_character': 243, 'bleu_score': 1.0, 'section': 'Section::::Chemistry.\n'}]}]