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.

Input: Consider Input: Sentence1: I was taking a long business trip one evening. Sentence2: I got terribly lost and my cell phone had died. Sentence3: It was dark and began to rain and I felt myself getting very anxious. Sentence4: I pulled into a gas station and asked for directions. Sentence5: In an hour I arrived safely at the hotel and fell asleep!

Output: I (myself)

Input: Consider Input: Sentence1: We sat down to talk about our problems. Sentence2: He said he wanted to work it out. Sentence3: I told him I didn't know if we could. Sentence4: He said he would start to change. Sentence5: I told him I would try one more time.

Output: I (myself)

Input: Consider Input: Sentence1: I was happy to get amazing seats to see my favorite singer in person. Sentence2: I asked my best friend to go with me to the concert. Sentence3: We could almost touch the stage once we were in our seats. Sentence4: The lead singer looked right at me and winked during a song. Sentence5: I could not stop smiling all the way home.
Output: I (myself), The lead singer, My best friend