In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Q: Sentence1: Ariana was feeling uneasy about her boyfriend going to Las Vegas. Sentence2: Her boyfriend Tim was going on a boys trip. Sentence3: Ariana felt left out. Sentence4: She confronted him but he went anyway. Sentence5: Ariana then contemplated her relationship.
A:
Tim, Ariana, Boyfriend