Assertion: birch | /r/PartOf | the genus
Facets:
Source sentences:
text: Birch trees belong to the genus Betula, which includes more than 30 species of deciduous trees found throughout the Northern Hemisphere.
text: Birch belongs to the genus Betula and is grouped under the Betulaceae family.
text: Birch trees belong to the genus Betula and are classified as part of the Betulaceae family of plants.