Question: when was child benefit paid for the first child
[{'answer': '1975', 'provenance': [{'wikipedia_id': '39018238', 'title': 'Child benefits in the United Kingdom', 'start_paragraph_id': 8, 'start_character': 3, 'end_paragraph_id': 8, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Family Allowance.\n'}]}, {'provenance': [{'wikipedia_id': '39018238', 'title': 'Child benefits in the United Kingdom', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9621080075873167236}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39018238', 'title': 'Child benefits in the United Kingdom', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 364, 'bleu_score': 0.8054165027813851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9621080075873167236}, 'section': 'Section::::Child Benefit and the end of child tax allowance.\n'}]}, {'provenance': [{'wikipedia_id': '39018238', 'title': 'Child benefits in the United Kingdom', 'section': 'Section::::Family Allowance.\n', 'start_paragraph_id': 8, 'end_paragraph_id': 8, 'meta': {'evidence_span': ['In 1975, the rate was increased to £1.50 for each child after the first.', 'In 1975, the rate was increased to £1.50 for each child after the first.', 'In 1975, the rate was increased to £1.50 for each child after the first.']}}]}, {'provenance': [{'wikipedia_id': '39018238', 'title': 'Child benefits in the United Kingdom', 'section': 'Section::::Family Allowance.\n', 'start_paragraph_id': 7, 'end_paragraph_id': 7, 'meta': {'evidence_span': ['In 1975, the rate was increased to £1.50 for each child after the first. Family Income Supplement was introduced in 1970 by the new Conservative government of Edward Heath, following a child poverty campaign, effective from August 1971, and provided for a payment to families on low wages. Claimants were', 'In 1975, the rate was increased to £1.50 for each child after the first.', 'In 1975, the rate was increased to £1.50 for each child after the first']}}]}]