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Born into a family of significant wealth and means , M.P.W. was broadly educated in the classics , philosophy and the sciences , subsequently becoming well versed in steam engine design , and then transferring his interest to the basic conceptual designs of jet propulsion and rocket motor s. However , whatever personal interest he held in the foundry 's operation and the coinage mint he inherited from his father soon waned , and he subsequently closed and sold the mint facility in 1850 .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
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