Assertion: dwelling's unit | /r/HasProperty | infested
Facets:
Source sentences:
text: Where a single dwelling unit in a building is infested, the occupant of that unit is responsible for extermination.
text: However, when a rodent infestation is caused by the failure of the owner to maintain the building in a rodent-proof condition, the owner is responsible for extermination regardless of how many units are infested.