Assertion: king penguin's egg | /r/HasProperty | held on their feet
Facets:
Source sentences:
text: They do not make a nest, instead the egg is held on their feet, covered by a fold of fat, during the incubation period.
text: They keep the egg held on their feet for a period of about 52 to 56 days, with stints of 12 to 21 days.