Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: Ari set up a fish tank for his family. Sentence 2: But his fish started to act strangely! Sentence 3: He called a pet store representative right away. Sentence 4: She walked Ari through the steps to correct his water parameters. Sentence 5: Soon Ari's fish were behaving normally- and happily!

Fish Tank