Assertion: mantle | /r/CapableOf | tear his anterior cruciate ligament
Facets:
value: during the incident
type: TEMPORAL
Source sentences:
text: Dr. Stephen Haas, medical director for the National Football League Players Association, has speculated that Mantle may have torn his anterior cruciate ligament (ACL) during the incident and played the rest of his career without having it properly treated since ACLs could not be repaired with the surgical techniques available in that era.