Ben and Jan are veterinarians at an animal hospital located in the Bukit Timah area called Vets R Us. Vets R Us provides the full range of pet healthcare services, including emergency surgery, hospitalisation of animals and recuperative care. Jan hired Ben 5 years ago when she needed help with the practice that she started. Ben's employment contract contains the following clause: "In the event of termination of employment, Ben undertakes not to: 1. Work as a vet or animal surgeon or enter into partnership with any other competing veterinary clinic, surgery or hospital in Singapore for a period of twelve (12) months, and 2. Open a veterinary clinic, surgery or hospital or any related business within a 5km radius of Vets R Us for a period of twelve (12) months." Ben wants to leave and immediately open a veterinary clinic near Vets R Us. Required 2.1. What kind of agreement did Ben enter into with Jan? 2.2. What is the legal effect of the above clause? 2.3. Is there any rule or law that Jan can invoke to allow her to enforce the clause against Ben