Assertion: leech | /r/CapableOf | produce blood thinner
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Source sentences:
text: Leeches can eat six to eight times their body weight, but rather than sinking to the bottom of the body of water they live in because of such a fully belly, leeches produce a natural anticoagulant or blood thinner, which keeps the blood in them from thickening and clotting and allows them to stay mobile [source: PBS].