Assertion: breast's nipple | /r/CapableOf | become erect
Facets:
value: because of sexual activity
type: CAUSE
value: because of breast feeding
type: CAUSE
value: because of cold
type: CAUSE
Source sentences:
text: The nipple becomes erect because of cold, breast feeding and sexual activity.
text: There are many smooth muscle fibres in tissues of the breast, which are specially arranged to help the nipple to become erect when stimulated.
text: The nipple becomes erect because of cold, breast feeding and sexual activity.