Assertion: barnacle | /r/HasProperty | lobster
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Source sentences:
text: Barnacles are crustaceans, like crabs, lobsters and shrimp, but early on in their life cycle they flip themselves upside-down, cement their heads permanently in place, retreat into the back of their hollow but still-living outer body and start sweeping plankton out of the water with the long, hairy legs they will never again use for swimming or walking.