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

[EX Q]: Sentence: 'a u.s. military helicopter landing or taking off'. Replace the letter 'i' with 'l' in the sentence.
[EX A]: a u.s. mllltary hellcopter landlng or taklng off

[EX Q]: Sentence: 'a large white sign with black lettering  leaning against a metal fence'. Replace the letter 'e' with 'j' in the sentence.
[EX A]: a largj whitj sign with black ljttjring  ljaning against a mjtal fjncj

[EX Q]: Sentence: 'a brown door  that says gentlemen and a toilet'. Replace the letter 'o' with 'f' in the sentence.
[EX A]:
a brfwn dffr  that says gentlemen and a tfilet