Question: who invented the printing press and in what year
[{'answer': 'Johannes Gutenberg', 'provenance': [{'wikipedia_id': '23295', 'title': 'Printing press', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1440'}, {'answer': 'Johannes Gutenberg around 1440'}, {'answer': 'the German Johannes Gutenberg'}, {'answer': 'around 1440'}, {'provenance': [{'wikipedia_id': '23295', 'title': 'Printing press', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 851, 'bleu_score': 0.6040494805088801, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15330123495647800126}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15745', 'title': 'Johannes Gutenberg', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Johannes Gensfleisch zur Laden zum Gutenberg (; February 3, 1468) was a German blacksmith, goldsmith, inventor, printer, and publisher who introduced printing to Europe with the printing press. His introduction of mechanical movable type printing to Europe started the Printing Revolution and is regarded as a milestone of the second millennium, ushering in the modern period of human history. It played a key role in the development of the Renaissance, Reformation, the Age of Enlightenment, and the scientific revolution and laid the material basis for the modern knowledge-based economy and the spread of learning to the masses.\rhighlight sentence(s) containing evidence, not only the answer', 'Johannes Gensfleisch zur Laden zum Gutenberg (; February 3, 1468) was a German blacksmith, goldsmith, inventor, printer, and publisher who introduced printing to Europe with the printing press. His introduction of mechanical movable type printing to Europe started the Printing Revolution and is regarded as a milestone of the second millennium', 'Johannes Gensfleisch zur Laden zum Gutenberg (; February 3, 1468) was a German blacksmith, goldsmith, inventor, printer, and publisher who introduced printing to Europe with the printing press.']}}]}, {'provenance': [{'wikipedia_id': '20537', 'title': 'Mainz', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ["Mainz was founded as Mogontiacum by the Romans in the 1st Century BC during Classical antiquity, serving as a military fortress on the northernmost frontier of the Roman Empire and as the provincial capital of Germania Superior. Mainz became an important city in the 8th Century AD as part of the Holy Roman Empire, becoming the capital of the Electorate of Mainz and seat of the Archbishop-Elector of Mainz, the Primate of Germany. Mainz is famous as the home of Johannes Gutenberg, the inventor of the movable-type printing press, who in the early 1450s manufactured his first books in the city, including the Gutenberg Bible. Historically, before the 20th century, the city was known in English as Mentz and in French as Mayence. Mainz was heavily damaged during World War II, with more than 30 air raids destroying about 80 percent of the city's center, including most of the historic buildings. Today, Mainz is a transport hub and a center of wine production.\rhighlight sentence(s) containing evidence, not only the answer", 'Mainz is famous as the home of Johannes Gutenberg, the inventor of the movable-type printing press, who in the early 1450s manufactured his first books in the city, including the Gutenberg Bible.']}}]}, {'provenance': [{'wikipedia_id': '42438345', 'title': 'Goražde printing house', 'section': 'Section::::Background.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['After the printing press was invented around 1450 by Johannes Gutenberg in Mainz, Germany, the art of book printing was soon introduced in other parts of Europe. By the end of the 15th century, Venice had become a major centre of printing. In 1493, Đurađ Crnojević, the ruler of the Principality of Zeta (in present-day Montenegro), sent Hieromonk Makarije to Venice to buy a press and learn the art of printing.', 'After the printing press was invented around 1450 by Johannes Gutenberg in Mainz, Germany,']}}]}]