Task: Information Extraction
Input (English): Sentence1: Mary adopted a dog from an animal shelter. Sentence2: The shelter requires the adopted dogs to be spayed or neutered. Sentence3: Mary procrastinated because she was afraid about the spay surgery. Sentence4: The vet told Mary the operations are very common and not to worry. Sentence5: The dog had the surgery and is doing very well.
Output (English): The dog, The vet, Mary