Q: 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.
Sentence1: Lisa owned a cat named Twinkles. Sentence2: Lisa loved Twinkles more than anything else in life. Sentence3: One day, Twinkles became very ill. Sentence4: Lisa took Twinkles to the vet. Sentence5: Lisa is very happy that Twinkles is recovering from the illness.
A:
Lisa, Twinkles, The vet