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

Ex Input:
Sentence: 'a woman in a floral swimsuit holds a pink umbrella'. Replace the letter 't' with 'l' in the sentence.

Ex Output:
a woman in a floral swimsuil holds a pink umbrella


Ex Input:
Sentence: 'the airplane is parked on the runway for people to look at'. Replace the letter 'a' with 'e' in the sentence.

Ex Output:
the eirplene is perked on the runwey for people to look et


Ex Input:
Sentence: 'a vase filled with yellow and purple flowers'. Replace the letter 'f' with 't' in the sentence.

Ex Output:

a vase tilled with yellow and purple tlowers