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

Ex Input:
Sentence: 'the two boys are eating large carrots while sitting on a blanket'. Replace the letter 'a' with 'q' in the sentence.

Ex Output:
the two boys qre eqting lqrge cqrrots while sitting on q blqnket


Ex Input:
Sentence: 'a little girl is sitting in a suitcase in a library'. Replace the letter 't' with 'l' in the sentence.

Ex Output:
a lillle girl is silling in a suilcase in a library


Ex Input:
Sentence: 'a chef carefully puts almonds onto the top of chocolates'. Replace the letter 'u' with 'v' in the sentence.

Ex Output:

a chef carefvlly pvts almonds onto the top of chocolates