TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a little girl is sitting in a suitcase in a library'. Replace the letter 't' with 'l' in the sentence.

SOLUTION: a lillle girl is silling in a suilcase in a library

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 large residential kitchen heavily decorated in white'. Replace the letter 'l' with 'k' in the sentence.

SOLUTION:
a karge residentiak kitchen heaviky decorated in white