Assertion: sheep's breed | /r/HasProperty | improved in southwestern spain
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Source sentences:
text: The breed was originated and improved in Extremadura, in southwestern Spain, around the 12th century; it was instrumental in the economic development of 15th and 16th century Spain, which held a monopoly on its trade, and since the end of the 18th century it was further refined in New Zealand and Australia, giving rise to the modern Merino.