Question: between 1900 and 1920 where did most of the migrants to the united states come from
[{'answer': 'Germans', 'provenance': [{'wikipedia_id': '14599622', 'title': 'History of immigration to the United States', 'start_paragraph_id': 11, 'start_character': 479, 'end_paragraph_id': 11, 'end_character': 486, 'bleu_score': 1.0, 'section': 'Section::::Colonial Era.:Dutch.\n'}]}, {'answer': 'British', 'provenance': [{'wikipedia_id': '14599622', 'title': 'History of immigration to the United States', 'start_paragraph_id': 1, 'start_character': 191, 'end_paragraph_id': 1, 'end_character': 198, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Irish', 'provenance': [{'wikipedia_id': '14599622', 'title': 'History of immigration to the United States', 'start_paragraph_id': 17, 'start_character': 406, 'end_paragraph_id': 17, 'end_character': 411, 'bleu_score': 1.0, 'section': 'Section::::Colonial Era.:Frontier.\n'}]}, {'provenance': [{'wikipedia_id': '14599622', 'title': 'History of immigration to the United States', 'start_paragraph_id': 48, 'start_character': 0, 'end_paragraph_id': 48, 'end_character': 394, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2547695346665226039}, 'section': 'Section::::1850 to 1930.:Demography.\n'}]}]