Arg0:cause of situation, agent
Arg1:thing situated
Arg2:place
| adjectival (-) | |
|---|---|
|  | |
| Arg1: | a former Christian Brothers monastery and the Seagram family mansion | 
| ArgM-MNR: | picturesquely | 
| REL: | situated | 
| Arg2-on: | the Hudson River | 
| sorta verbal (-) | |
|---|---|
|  | |
| ArgM-ADV: | generally | 
| REL: | situated | 
| Arg1: | *trace* -> the properties | 
| Arg2-in: | Wyoming, North Dakota, Texas, Oklahoma and Louisiana | 
Active/agentive cases will probably not occur, leading me to believe this is properly treated as an adjective.