TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a giraffe sticks its tongue out in the air'. Replace the letter 'e' with 'l' in the sentence.

SOLUTION: a giraffl sticks its tongul out in thl air

PROBLEM: Sentence: 'a couple giraffes walking through a fielded area'. Replace the letter 'e' with 'c' in the sentence.

SOLUTION: a couplc giraffcs walking through a ficldcd arca

PROBLEM: Sentence: 'a plate of mashed potatoes, meat, vegetables, with various utensils and a glass of orange juice'. Replace the letter 'l' with 'x' in the sentence.

SOLUTION:
a pxate of mashed potatoes, meat, vegetabxes, with various utensixs and a gxass of orange juice