Assertion: dolphin's offspring | /r/HasProperty | single
Facets:
Source sentences:
text: Dolphins have more than one mate, and generally produce a single offspring that will stay with the mother for up to six years, depending on the species.
text: Female dolphins typically produce a single offspring every 2 – 6 years and will often raise their young for several years after they are born.
text: While they are fertile, the female dolphins bear single offspring once
text: Also like other mammal species dolphins will typically give birth to a single offspring once every 1 – 6 years; however on rare occasions a dolphin may give birth to twins.