Question: what is the meaning of nat in networking
[{'answer': 'Network address translation', 'provenance': [{'wikipedia_id': '53036', 'title': 'Network address translation', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '53036', 'title': 'Network address translation', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 546, 'bleu_score': 0.610600232348633, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 298088580172854386}, 'section': 'Section::::Abstract.'}]}]