Roleset hospitalize.01 Verbnet Class: NONE "be in or send to (the) hospital":

Roles:

Arg0:sender


Arg1:injured/ill entity

Examples:

passivized (-)
Mr. Mingo was hospitalized *trace* Sept. 23 and died Monday, according to Samuel J. Chisholm, the agency's president and chief operating officer.
REL:	hospitalized
Arg1:	*trace* -> Mr. Mingo
ArgM-TMP:	Sept. 23

This is clearly an agentive verb because of the way it appears in the passive in sentences such as this. But I'll bet money that an agent never appears.