In this task, you need to replace a letter in the sentence with another given letter.

[EX Q]: Sentence: 'a couple of brown bears walking across a lush green field'. Replace the letter 'w' with 'o' in the sentence.
[EX A]: a couple of broon bears oalking across a lush green field

[EX Q]: Sentence: 'a couple of giraffe standing next to each other'. Replace the letter 'i' with 'q' in the sentence.
[EX A]: a couple of gqraffe standqng next to each other

[EX Q]: Sentence: 'a picture of a car that is by some water'. Replace the letter 'i' with 'x' in the sentence.
[EX A]:
a pxcture of a car that xs by some water