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: Jacob noticed his dog was whining. Sentence2: Jacob investigated and found his dog's leg hurt. Sentence3: He took the dog to see the vet. Sentence4: The vet made a cast to set the hurt leg. Sentence5: Within a few weeks, Jacob and his dog were playing again!
[A]: Jacob, Vet, Dog

[Q]: Sentence1: When Lana was pregnant, she was in a car accident. Sentence2: She was taken to the hospital for x-rays. Sentence3: Months later, the baby was born with a clubfoot. Sentence4: Lana sued the hospital for giving her x-rays while pregnant. Sentence5: She received a settlement, which she put aside for her son.
[A]: Baby, Lana

[Q]: Sentence1: Colby was a good little eight year old boy. Sentence2: He loved to play with all of his army men. Sentence3: One day he lost his army men and couldn't find them. Sentence4: He got very upset and was worried he would never find them. Sentence5: He finally found them and he was very happy.
[A]:
Colby