Question: what is the minimum speed of 3g network
[{'answer': '2 Mbit / s'}, {'provenance': [{'wikipedia_id': '282450', 'title': '3G', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 425, 'bleu_score': 0.9348189981364851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15515310687622068475}, 'section': 'Section::::Abstract.'}]}]