Question: how many federal workers are there in the us
[{'answer': 'approximately 2.79 million civil servants', 'provenance': [{'wikipedia_id': '6553678', 'title': 'United States federal civil service', 'start_paragraph_id': 2, 'start_character': 62, 'end_paragraph_id': 2, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6553678', 'title': 'United States federal civil service', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 362, 'bleu_score': 0.871115133229549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13637432052246213245}, 'section': 'Section::::Abstract.'}]}]