Question: where do most immigrants in france come from
[{'answer': 'Portugal', 'provenance': [{'wikipedia_id': '2960754', 'title': 'Immigration to France', 'start_paragraph_id': 6, 'start_character': 280, 'end_paragraph_id': 6, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]