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: Bob's bought a trailer that had a shingle roof. Sentence2: When it rained the roof would leak pretty badly. Sentence3: Bob checked his insurance policy to see if it was covered. Sentence4: The insurance replaced the shingle roof with a metal one. Sentence5: Bob's happy the rain doesn't leak into his house any more.
Bob

Sentence1: Tina was taking a science test. Sentence2: She was not prepared. Sentence3: She hardly studied. Sentence4: She kept it blank. Sentence5: She ended up failing.
Tina

Sentence1: Work needed to be done on Miss Corcoran's roof. Sentence2: She elected to do the work herself. Sentence3: She bought a huge ladder and set it up against her house. Sentence4: She got vertigo while climbing the ladder and descended again. Sentence5: Miss Corcoran ended up paying a neighborhood girl to do the work.
Miss corcoran, A neighborhood girl