Question: where did immigrants enter new york before ellis island
[{'answer': 'Castle Clinton', 'provenance': [{'wikipedia_id': '1135870', 'title': 'Castle Clinton', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1135870', 'title': 'Castle Clinton', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 470, 'bleu_score': 0.7454765595297921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11222918376422429754}, 'section': 'Section::::Abstract.'}]}]