Detailed Instructions: In this task, you're given four sentences of a story written in natural language in which one part is missing. Your job is to predict the position and missing part of the story and return in the following format: position, missing part. The missing part is a sentence that completes the story, and the position is the number of the missing sentence in the new story.
Q: Sentence1: Yesterday I went to the animal shelter. Sentence2: I fell in love with a dog named Toby. Sentence3: After introducing him to my cat we decided to take him home. Sentence4: My family all loved Toby.
A:
2, I have been in search of the perfect dog for my family.