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

Ex Input:
Sentence: 'two men and a dog are standing beside a building'. Replace the letter 'b' with 'y' in the sentence.

Ex Output:
two men and a dog are standing yeside a yuilding


Ex Input:
Sentence: 'a woman rests in bed with her laptop'. Replace the letter 's' with 'e' in the sentence.

Ex Output:
a woman reete in bed with her laptop


Ex Input:
Sentence: 'the area is outdoors, a residential house exterior, driveway and yard area,  while specifically highlighted in the foreground are two riding toys, a horse and an elephant'. Replace the letter 'e' with 't' in the sentence.

Ex Output:

tht arta is outdoors, a rtsidtntial houst txttrior, drivtway and yard arta,  whilt sptcifically highlighttd in tht fortground art two riding toys, a horst and an tltphant