Predicate 
obligate:
  Frames file for 'obligate' based on sentences in wsj.  No Verbnet
  entry. 
Roleset obligate.01 Verbnet Class: NONE "impelled action":
Roles:
Arg0:causal agent
Arg1:obligated, impelled agent
Arg2:obligation, impelled action
Examples:
| always passive (-) | 
|---|
person: ns
tense: present
aspect: ns
voice: passive
form: participle
| Thus, an institution obligated *trace* to make fixed-rate interest
 payments on debt swaps the payments with another making
 floating-rate payments.
 
 | 
| REL: | obligated | 
| Arg1: | *trace* ->  an institution | 
| Arg2: | to make fixed-rate interest payments on debt | 
The only difference between 'oblige' and 'obligate' is that the latter
can only occur in the passive.  The former also prefers the passive,
though.