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

Sentence: 'a yellow street sign sitting on the side of a road'. Replace the letter 'a' with 'd' in the sentence.
d yellow street sign sitting on the side of d rodd

Sentence: 'two tennis players shaking hands over the net'. Replace the letter 'n' with 'f' in the sentence.
two teffis players shakifg hafds over the fet

Sentence: 'an elephant stands near a log by a wall'. Replace the letter 'n' with 'w' in the sentence.
aw elephawt stawds wear a log by a wall