From SIGSEM
"Cervical cancer is caused by a virus."
((VIRUS001 INSTANCE-OF VIRUS#1)
(CANCER001 INSTANCE-OF CANCER#1)
(VIRUS001 CAUSING CANCER001)
(CANCER001 CHARACTERISTICS CERVICAL))
"That has been known for some time and it has led to a vaccine that seems to prevent it."
((SITUATION001 INSTANCE-OF UNKNOWN-REFERENT)
(TIME001 INSTANCE-OF TIME#1)
(VACCINE001 INSTANCE-OF VACCINE#1)
(SITUATION001 KNOWING INTRANSITIVE-ARGUMENT)
(KNOWING PURPOSE-FOR TIME001)
(TIME001 QUANTIFIER-VALUE SOME)
(TIME-PERIOD KNOWING PAST-HABITUAL-ACTION)
(SINGLE-NEUTER-REFERENT LEADING INTRANSITIVE-ARGUMENT)
(DESTINATION LEADING VACCINE001)
(TIME-PERIOD LEADING PRESENT-PERFECT)
(VACCINE001 PREVENTING001 SINGLE-NEUTER-REFERENT)
(VACCINE001 SEEMING PREVENTING001))
"Researchers have been looking for other cancers that may be caused by viruses."
((RESEARCHER001 INSTANCE-OF RESEARCHER#1)
(CANCER001 INSTANCE-OF CANCER#1)
(VIRUS001 INSTANCE-OF VIRUS#1)
(RESEARCHER001 LOOKING INTRANSITIVE-ARGUMENT)
(RESEARCHER001 NUMBER-OF-UNITS MORE-THAN-ONE)
(LOOKING PURPOSE-FOR CANCER001)
(CANCER001 CHARACTERISTICS OTHER-ADJ)
(CANCER001 NUMBER-OF-UNITS MORE-THAN-ONE)
(TIME-PERIOD LOOKING-AT PAST-HABITUAL-ACTION)
(VIRUS001 CAUSING CANCER001)
(VIRUS001 NUMBER-OF-UNITS MORE-THAN-ONE)
(MODALITY CAUSING MODAL-MAY))
