Question: when did the first international earth day celabration occur
[{'answer': 'in 1982'}, {'provenance': [{'wikipedia_id': '2514283', 'title': 'International Day of Peace', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 597, 'bleu_score': 0.9541060922758601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12835953073947451864}, 'section': 'Section::::Abstract.'}]}]