Aaron chained themself to a tree so that Steven couldn't cut it down since it was well known that 
OPTIONS:
- Aaron is a tree hugger.
- Steven is a tree hugger.
Aaron is a tree hugger.

Christine made a compliment to Jennifer because 
OPTIONS:
- Christine was pleased with how the potatoes turned out.
- Jennifer was pleased with how the potatoes turned out.
Christine was pleased with how the potatoes turned out.

Lawrence buys Robert a watch for a graduation present because 
OPTIONS:
- Lawrence is a great student.
- Robert is a great student.
Robert is a great student.