Assertion: viper | /r/HasProperty | viperidae
Facets:
Source sentences:
text: The viper (Viperidae) is a family of more than 200 species of venomous snakes.
text: The situation is even more complex in countries such as India, with its rich mix of vipers (Viperidae) and highly neurotoxic cobras and kraits of the Elapidae.