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

[Q]: Sentence: 'a couple of horses with carriages at a building'. Replace the letter 'u' with 'm' in the sentence.
[A]: a comple of horses with carriages at a bmilding


[Q]: Sentence: 'a yellow fire hydrant sitting on the sidewalk'. Replace the letter 'o' with 'd' in the sentence.
[A]: a yelldw fire hydrant sitting dn the sidewalk


[Q]: Sentence: 'a table full of teenagers eating lunch and talking'. Replace the letter 'l' with 'z' in the sentence.
[A]:
a tabze fuzz of teenagers eating zunch and tazking