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

Ex Input:
Sentence: 'a crowd watches as giraffes graze the tree tops at the zoo'. Replace the letter 't' with 'q' in the sentence.

Ex Output:
a crowd waqches as giraffes graze qhe qree qops aq qhe zoo


Ex Input:
Sentence: 'some tracks for a rail way system near a building'. Replace the letter 'a' with 'h' in the sentence.

Ex Output:
some trhcks for h rhil why system nehr h building


Ex Input:
Sentence: 'a bathroom toilet with a religious icon hanging behind it'. Replace the letter 'o' with 'e' in the sentence.

Ex Output:

a bathreem teilet with a religieus icen hanging behind it