TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'an umbrella sitting on top of a hill next to a body of water'. Replace the letter 't' with 'b' in the sentence.

SOLUTION: an umbrella sibbing on bop of a hill nexb bo a body of waber

PROBLEM: Sentence: 'a bathroom with a make shift shower curtain'. Replace the letter 'w' with 's' in the sentence.

SOLUTION: a bathroom sith a make shift shoser curtain

PROBLEM: Sentence: 'protesters hold up signs next to a busy street'. Replace the letter 'y' with 'p' in the sentence.

SOLUTION:
protesters hold up signs next to a busp street