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

Ex Input:
Sentence: 'a person is riding a skateboard in a skateboard park'. Replace the letter 'a' with 'o' in the sentence.

Ex Output:
o person is riding o skoteboord in o skoteboord pork


Ex Input:
Sentence: 'a photo of a woman milking a brown cow'. Replace the letter 'k' with 'q' in the sentence.

Ex Output:
a photo of a woman milqing a brown cow


Ex Input:
Sentence: 'she is sitting on the floor while playing a videogame'. Replace the letter 'g' with 'u' in the sentence.

Ex Output:

she is sittinu on the floor while playinu a videouame