TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a crowd looking at a trio of planes that are sitting idle'. Replace the letter 'a' with 'e' in the sentence.

SOLUTION: e crowd looking et e trio of plenes thet ere sitting idle

PROBLEM: Sentence: 'giraffe standing on a pile of rocks reaching up to a branch with its mouth'. Replace the letter 'g' with 'n' in the sentence.

SOLUTION: niraffe standinn on a pile of rocks reachinn up to a branch with its mouth

PROBLEM: Sentence: 'an adult male ready to hit the baseball with a baseball bat at home base'. Replace the letter 't' with 'd' in the sentence.

SOLUTION:
an aduld male ready do hid dhe baseball widh a baseball bad ad home base