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

Sentence: 'a crooked street sign on a damaged sidewalk'. Replace the letter 'm' with 'u' in the sentence.
a crooked street sign on a dauaged sidewalk

Sentence: 'the tennis player throws her racket in celebration'. Replace the letter 't' with 'l' in the sentence.
lhe lennis player lhrows her rackel in celebralion

Sentence: 'a person standing near boats in the water under an umbrella'. Replace the letter 'e' with 'f' in the sentence.

a pfrson standing nfar boats in thf watfr undfr an umbrflla