Assertion: wallaby's mother | /r/CapableOf | give birth to one joey
Facets:
value: at this stage
type: TEMPORAL
value: at a time
type: TEMPORAL
Source sentences:
text: Mothers give birth to one joey at a time.
text: At this stage, the mother gives birth to another joey so that she has one in the pouch attached to a teat and one 'at foot' returning to feed from the teat it has always used.