TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'there are people camping and flying kites in a field'. Replace the letter 't' with 'j' in the sentence.

SOLUTION: jhere are people camping and flying kijes in a field

PROBLEM: Sentence: 'a yellow street sign sitting on the side of a road'. Replace the letter 'a' with 'd' in the sentence.

SOLUTION: d yellow street sign sitting on the side of d rodd

PROBLEM: Sentence: 'there are several airplane in the air and they are leaving a trail'. Replace the letter 'r' with 'g' in the sentence.

SOLUTION:
thege age sevegal aigplane in the aig and they age leaving a tgail