Question: when did iana make the final /8 allocations of ipv4 addresses
[{'answer': '31 January 2011', 'provenance': [{'wikipedia_id': '6852935', 'title': 'IPv4 address exhaustion', 'start_paragraph_id': 4, 'start_character': 37, 'end_paragraph_id': 4, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6852935', 'title': 'IPv4 address exhaustion', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 351, 'bleu_score': 0.9669306597086381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3320311715416122211}, 'section': 'Section::::Exhaustion dates and impact.\n'}]}]