TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'children trying little hamburgers from a tray at school'. Replace the letter 'y' with 'l' in the sentence.

SOLUTION: children trling little hamburgers from a tral at school

PROBLEM: Sentence: 'a hand held game or older cell phone'. Replace the letter 'o' with 'c' in the sentence.

SOLUTION: a hand held game cr clder cell phcne

PROBLEM: Sentence: 'a living room with a large decorated christmas tree'. Replace the letter 'i' with 'n' in the sentence.

SOLUTION:
a lnvnng room wnth a large decorated chrnstmas tree