Assertion: echidna's egg | /r/HasAspect | soft shell
Facets:
value: fairly
type: DEGREE
Source sentences:
text: Three weeks after mating, the female viper lays only one egg, which has a fairly soft shell.
text: The eggs have a soft shell, and are about 13-16mm long (about the same size as a U.S dime or an Australian 5-cent coin) with a slight oval shape.