Assertion: sea urchin's shell | /r/HasProperty | spiny
Facets:
value: from 3 to 10 cm
type: OTHER
Source sentences:
text: Sea urchins have spiny shells for protection.
text: Their shell, or "test", is round and spiny, typically from 3 to 10 cm across.
text: Their hard shells, called “tests,” are spiny and round and come in a variety of colors.
text: The shell, or "test", of sea urchins is round and spiny, typically from 3 to 10 cm (1.2 to 3.9 in) across.
text: The shell, or "test", of sea urchins is round and spiny, typically from 3 to 10 cm (1.2 to 3.9 in) across.