Question: when is an infant's first word typically spoken
[{'answer': 'approximately 12 months old', 'provenance': [{'wikipedia_id': '16415709', 'title': 'Phonological development', 'start_paragraph_id': 33, 'start_character': 69, 'end_paragraph_id': 33, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::Prelinguistic development (birth – 1 year).:Production.:Stages of pre-speech vocal development.\n'}]}, {'provenance': [{'wikipedia_id': '16415709', 'title': 'Phonological development', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 242, 'bleu_score': 0.9493253852526031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 322627369673938704}, 'section': 'Section::::Prelinguistic development (birth – 1 year).:Production.:Stages of pre-speech vocal development.\n'}]}]