Assertion: tetanus's vaccine | /r/CapableOf | become available
Facets:
value: in the 1940s
type: TEMPORAL
value: widely
type: DEGREE
Source sentences:
text: In spite of this, pertussis affects many fewer people today than before pertussis-containing vaccines became widely available in the 1940s.
text: tetanus disease is rare since a vaccine became available in the 1940s