Assertion: smallpox | /r/HasProperty | infection
Facets:
Source sentences:
text: Smallpox is an infection that's caused by the variola virus.
text: Smallpox is an infection caused by the variola virus, a member of the poxvirus family.
text: Smallpox is an infection caused by the variola virus.
text: Smallpox was an infection that was caused by the virus called variola virus.
text: Smallpox is an infection caused by the variola virus.