The task is to identify case assigner for each noun phrase. First is an example and should be correct. What about others? Are they correct or missing some phrases/assigners.
Mary leaves for Durham on Monday.*
Mary, Case assigner: tensed I
Durham, Case assigner: preposition for
Monday, Case assigner: preposition on.*

Catherine prefers for us to eat lunch first.
Catherine, case assigner: tensed I
us, case assigner:preposition for

They are still waiting for Jorge.*
jorge, case assigner:preposition for