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: Maude always used old maps to find her way while driving. Sentence2: But this time she couldn't find her target. Sentence3: Maude pulled her phone and found the location using GPS. Sentence4: And as she exited her car, she threw her old map away. Sentence5: From now on, she'd use her phone to find her way.
Maude

Sentence1: Bob loved to eat fat. Sentence2: His friends thought he ate too much. Sentence3: Indeed, the fat increased Bob's cholesterol intake dramatically. Sentence4: Bob's arteries were becoming clogged. Sentence5: After many years, Bob had a heart attack and died.
Friends, Bob

Sentence1: Ken was always bad at holidays. Sentence2: This year he tried his best to remember mother's day. Sentence3: He sent his mother a card. Sentence4: Ken then took her out to dinner. Sentence5: His mother was very appreciative.
Ken, Mother