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

Sentence: 'a couple walking down a sidewalk next to some graffiti'. Replace the letter 'a' with 'y' in the sentence.
y couple wylking down y sidewylk next to some gryffiti

Sentence: 'a close up of a bathroom sink with soap and tooth brushes in a cup'. Replace the letter 't' with 'y' in the sentence.
a close up of a bayhroom sink wiyh soap and yooyh brushes in a cup

Sentence: 'a group of young people sitting on couches'. Replace the letter 'n' with 'k' in the sentence.

a group of youkg people sittikg ok couches