Question: who has won the most portuguese league titles
[{'answer': 'S.L. Benfica', 'provenance': [{'wikipedia_id': '13671845', 'title': 'List of Portuguese football champions', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '13671845', 'title': 'List of Portuguese football champions', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 509, 'bleu_score': 0.851150020371062, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9049594892937789282}, 'section': 'Section::::History.\n'}]}]