Question: who invented fountain pen and in which year
[{'answer': 'Petrache Poenaru', 'provenance': [{'wikipedia_id': '60284', 'title': 'Fountain pen', 'start_paragraph_id': 9, 'start_character': 747, 'end_paragraph_id': 9, 'end_character': 763, 'bleu_score': 1.0, 'section': 'Section::::History.:First patents.\n'}]}, {'answer': 'May 25 , 1827', 'provenance': [{'wikipedia_id': '60284', 'title': 'Fountain pen', 'start_paragraph_id': 9, 'start_character': 792, 'end_paragraph_id': 9, 'end_character': 805, 'bleu_score': 1.0, 'section': 'Section::::History.:First patents.\n'}]}, {'provenance': [{'wikipedia_id': '60284', 'title': 'Fountain pen', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 349, 'bleu_score': 0.5993591943377431, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16034052450961039691}, 'section': 'Section::::History.:First patents.\n'}]}]