Assertion: hay's amount | /r/HasProperty | mare
Facets:
Source sentences:
text: If pasture is a feed source, horses with a mature weight of 1,000 to 1,200 pounds generally need the following amount of pasture: mare and foal, 1.75 to 2 acres; year-lings, 1.5 to 2 acres; and weanlings, 0.5 to 1 acre.