Assertion: teak | /r/HasProperty | a hardwood birch
Facets:
Source sentences:
text: Teak is a hardwood birch and it contains a highly water-resistant resin in the cambria (the heartwood) that makes this species impervious to decay, insect invasion and bacteria.
text: Teak, or Tectona grandis, is a hardwood tree species that can grow up to 30-40m in tropical rainforest.