Question: how many different species of arachnids are there
[{'answer': 'over 100,000', 'provenance': [{'wikipedia_id': '87168', 'title': 'Arachnid', 'start_paragraph_id': 2, 'start_character': 202, 'end_paragraph_id': 2, 'end_character': 214, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '87168', 'title': 'Arachnid', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 228, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12690984517493830757}, 'section': 'Section::::Abstract.'}]}]