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

Ex Input:
Sentence: 'a baseball player running to third base from second'. Replace the letter 'a' with 'u' in the sentence.

Ex Output:
u busebull pluyer running to third buse from second


Ex Input:
Sentence: 'the cargo train is headed to the next destination'. Replace the letter 'h' with 'x' in the sentence.

Ex Output:
txe cargo train is xeaded to txe next destination


Ex Input:
Sentence: 'professional tennis player is hitting a tennis serve'. Replace the letter 'a' with 'g' in the sentence.

Ex Output:

professiongl tennis plgyer is hitting g tennis serve


