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

Ex Input:
Sentence: 'giraffes behind a fence in the trees'. Replace the letter 'h' with 'l' in the sentence.

Ex Output:
giraffes belind a fence in tle trees


Ex Input:
Sentence: 'a man walking his dog near a sandy area'. Replace the letter 'i' with 'g' in the sentence.

Ex Output:
a man walkgng hgs dog near a sandy area


Ex Input:
Sentence: 'a group of three people in the water petting a hippopotamus'. Replace the letter 'o' with 'z' in the sentence.

Ex Output:

a grzup zf three pezple in the water petting a hippzpztamus