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

[EX Q]: Sentence: 'a open entrance leading to a set of closed doors'. Replace the letter 'd' with 'f' in the sentence.
[EX A]: a open entrance leafing to a set of closef foors

[EX Q]: Sentence: 'a sad looking dog getting a bath in a sink'. Replace the letter 't' with 'c' in the sentence.
[EX A]: a sad looking dog geccing a bach in a sink

[EX Q]: Sentence: 'a man holds a circuit board and examines it intently'. Replace the letter 'c' with 'm' in the sentence.
[EX A]:
a man holds a mirmuit board and examines it intently