In this task, you need to replace a letter in the sentence with another given letter.

Q: Sentence: 'a cat is watching a computer with a video of a cat'. Replace the letter 't' with 'a' in the sentence.

A: a caa is waaching a compuaer wiah a video of a caa
****
Q: Sentence: 'a woman standing in front of a bear in an enclosure'. Replace the letter 'e' with 'r' in the sentence.

A: a woman standing in front of a brar in an rnclosurr
****
Q: Sentence: 'a skateboarder riding the edge of a dumpster on the street'. Replace the letter 'd' with 't' in the sentence.

A:
a skateboarter riting the etge of a tumpster on the street
****