Assertion: popcorn's kernel | /r/HasProperty | hard
Facets:
Source sentences:
text: Popcorn is mature when the stalk and leaves are brown and dry, the kernel is hard, and a "black layer," easily found by scratching away the tip of the kernel, is formed.
text: Popcorn: Leave the ears on the stalks until the husks are dry and the kernels are hard.
text: When harvested, the kernels should be hard and the husks completely dry.
text: Field corn is not sweet because it is harvested much later when the kernels are dry and hard and all the sugar has been converted.
text: When field corn is ripe, the kernels are hard, firm, and starchy.