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

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


[Q]: Sentence: 'a woman sitting in front of a laptop computer'. Replace the letter 'u' with 'o' in the sentence.
[A]: a woman sitting in front of a laptop compoter


[Q]: Sentence: 'a tree with balloons tied onto it and candles at the base of it'. Replace the letter 'b' with 'm' in the sentence.
[A]:
a tree with malloons tied onto it and candles at the mase of it