Assertion: vaccine's virus | /r/CapableOf | affect cow
Facets:
value: mainly
type: DEGREE
Source sentences:
text: The immunization was called vaccination because it was derived from a virus affecting cows (Latin: vacca 'cow').
text: A virus that mainly affects cows (Cowpox) was used in the first scientific demonstration that giving a person one virus could protect against a related and more dangerous one.