Question: what is the size of xbox 360 headset jack
[{'answer': '2.5 mm', 'provenance': [{'wikipedia_id': '12093867', 'title': 'Xbox 360 controller', 'start_paragraph_id': 4, 'start_character': 436, 'end_paragraph_id': 4, 'end_character': 442, 'bleu_score': 1.0, 'section': 'Section::::Design.\n'}]}]