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

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


[Q]: Sentence: 'a baseball player is throwing a ball across the dirt field'. Replace the letter 'a' with 't' in the sentence.
[A]: t btsebtll pltyer is throwing t btll tcross the dirt field


[Q]: Sentence: 'a tall stack of tasty looking pancakes on a very pretty plate'. Replace the letter 'l' with 'v' in the sentence.
[A]:
a tavv stack of tasty vooking pancakes on a very pretty pvate