Assertion: owl's weight | /r/HasProperty | 46 to 57.1 g
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Source sentences:
text: In a pair of studies from Colorado, the average weight of prey for long-eared owls was 28 to 30 g (0.99 to 1.06 oz), 46 to 57.1 g (1.62 to 2.01 oz) for barn owl and 177 to 220 g (6.2 to 7.8 oz) for the great horned owl.