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

Ex Input:
Sentence: 'two tennis players shaking hands across the net'. Replace the letter 't' with 's' in the sentence.

Ex Output:
swo sennis players shaking hands across she nes


Ex Input:
Sentence: 'closeup of two teddy bears in red scarves and a brown teddy bear'. Replace the letter 'i' with 'y' in the sentence.

Ex Output:
closeup of two teddy bears yn red scarves and a brown teddy bear


Ex Input:
Sentence: 'there are many different horses walking together on the field'. Replace the letter 't' with 'v' in the sentence.

Ex Output:

vhere are many differenv horses walking vogevher on vhe field