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

Sentence: 'a memorial with various plaques and american flags on it'. Replace the letter 'a' with 'k' in the sentence.
k memorikl with vkrious plkques knd kmerickn flkgs on it

Sentence: 'a fancy clock is lit up on the street'. Replace the letter 'o' with 'f' in the sentence.
a fancy clfck is lit up fn the street

Sentence: 'a man in glasses trying to tie a tie'. Replace the letter 't' with 'e' in the sentence.

a man in glasses erying eo eie a eie