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: I entered my Biochemistry class with confidence during the first day. Sentence2: Since I spent hours studying, I had no doubt that I would fail. Sentence3: However, I ended up failing my first two tests. Sentence4: Although there was no way of passing the class, I still tried. Sentence5: I ended up failing and took this experience as a learning one.
A:
I (myself)