In English, nominalized verbs have only one form regardless of the thematic relation of its possessor:
- The robot's destruction (of the city) terrified authorities.
- The robot's destruction (by the authorities) saddened its creator.
In (1), the robot is the agent whereas in (2), it is the patient.
Are there any languages in which the nominalized verb has different forms depending on the thematic relation of its possessor? That would seem like a very useful distinction to be able to make.