Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Passage: The Egyptian collection consists of about fifty itens, including some objects which stand out in the context of Brazilian museums, due to their quality and rarity. Since these objects are not related to official archeological excavations, their exact place of origin remains largely unknown. The collection includes a number of large pharaonic statuary, in which a head of a Pharaoh in a nemes headdress is the centerpiece. Among the funerary itens, there is a coffin mask with encrusted glass eyes dating back to the 17th Dynasty, and other pieces which reflect the importance of animals in Egyptian rituals, such as a coffin of a mummified cat from the Ptolemaic period. The collection also includes reliefs and fragments of architectural decoration, such as a prominent temple bas-relief of a goddess with the body of a woman and the head of a lioness, dating back to the 3rd Intermediate Period.
Link Information: The 17th Dynasty dates approximately from 1580 to 1550 BC. Question: When was the 17th Dynasty in Egyptian history?
A:
Answer: 1580 to 1550 BC