Question: what is the population of spanish speakers in the u.s
[{'answer': 'over 50 million', 'provenance': [{'wikipedia_id': '189109', 'title': 'Spanish language in the United States', 'start_paragraph_id': 1, 'start_character': 279, 'end_paragraph_id': 1, 'end_character': 294, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '189109', 'title': 'Spanish language in the United States', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 834, 'bleu_score': 0.612988180233584, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11853574371044649116}, 'section': 'Section::::Abstract.'}]}]