I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: Summer Lovers Movie plot: Michael and Cathy, a young couple who have just graduated from college, have known each other about 10 years and have been together about half that time. They arrive on a nameless Greek island to spend two months for the summer of relaxing before going back to the real world. When they visit a nude beach crowded with other young tourists (a combination of American, British, French, German, Italian, Spanish, as well as Greek), they are hesitant at first but find themselves getting caught up in the uninhibited energy that surrounds them.Cathy reads a book of sexual techniques, then ties Michael to the bed and drips candle wax on his chest that evening. Michael is very uncomfortable by her experiements. Cathy comments that everyone thinks she's "such a Goody Two-Shoes" but she wants a little more adventure.Michael, who says he has never been with another woman, keeps noticing Lina, a French archaeologist on temporary assignment at the nearby Akrotiri excavation. One day, at the beach without Cathy, he gets his chance to talk to Lina and ends up starting an affair with her. He then feels so guilty that Cathy immediately notices something is wrong, and he admits what he has done, insisting that he still loves Cathy.Cathy is naturally disturbed by this, but tells him to "get it out of his system", which he takes as permission to return to Lina. Cathy then goes to a local bar intending to sleep with another man as a way to get revenge against Michael for cheating on her. But in the end, she chickens out after getting picked up by an amorous local boy. When Michael comes home later after seeing Lina again, Cathy says she wants out of the relationship.The next day, Cathy goes to Lina's home to confront her. Lina assures Cathy that she does not intend to take Michael away from her, which seems to calm Cathy somewhat. Lina and Cathy end up spending several hours together getting acquainted, and talking, and find themselves fascinated by each other's work; Lina's archeology and Cathy's photography.Michael is confused... My question: Who have just graduated from college?
A:
Michael and Cathy