Assertion: trumpeter swan | /r/CapableOf | owe their existence
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Source sentences:
text: All trumpeter swans in our [Minnesota] region owe their existence largely to the efforts of the Nongame Wildlife Program with the Minnesota Department of Natural Resources (DNR), which spearheaded a repopulation plan in the 1980s using 50 swan eggs per year (from 1986–88) from Alaska, which had a healthy trumpeter population.