Assertion: zebra | /r/HasAspect | white underbellies
Facets:
Source sentences:
text: No two zebras have exactly the same stripe pattern, but there are some differences between species: For example, Grevy's zebras and mountain zebras have white underbellies; on plains zebras, the belly is striped.
text: It was previously believed that zebras were white animals with black stripes, since some zebras have white underbellies.