Question: when did the first immigrants come through ellis island
[{'answer': 'January 1 , 1892', 'provenance': [{'wikipedia_id': '9806', 'title': 'Ellis Island', 'start_paragraph_id': 33, 'start_character': 22, 'end_paragraph_id': 33, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::History.:First immigration station.\n'}]}]