TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'giraffes behind a fence in the trees'. Replace the letter 'h' with 'l' in the sentence.

SOLUTION: giraffes belind a fence in tle trees

PROBLEM: Sentence: 'little tubs of rice and mixed vegetables for a meal'. Replace the letter 't' with 'z' in the sentence.

SOLUTION: lizzle zubs of rice and mixed vegezables for a meal

PROBLEM: Sentence: 'empty wooden bench with piles of twigs in front of some parked cars'. Replace the letter 's' with 'i' in the sentence.

SOLUTION:
empty wooden bench with pilei of twigi in front of iome parked cari