Question: when did the concept of romantic love begin
[{'answer': 'the Middle Ages', 'provenance': [{'wikipedia_id': '285141', 'title': 'Romance (love)', 'start_paragraph_id': 16, 'start_character': 125, 'end_paragraph_id': 16, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::General definitions.:Popularization of love.\n'}]}, {'provenance': [{'wikipedia_id': '285141', 'title': 'Romance (love)', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 461, 'bleu_score': 0.914398927113332, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10276414967723704190}, 'section': 'Section::::General definitions.:Popularization of love.\n'}]}]