Assertion: guinea pig's cage | /r/HasProperty | essential
Facets:
value: for them
type: TRANSITIVE-OBJECT
value: quite
type: DEGREE
value: to ensure their happiness
type: PURPOSE
Source sentences:
text: A cage with enough space to move freely, at least 120 x 50 x 45 cm according to the Royal Society for the Prevention of Cruelty of Animals, is essential to ensure their happiness.
text: A cage, pen or container they can get into and out of sight is quite essential for them.