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

Q: Sentence: 'a giraffe walking in its natural habitat on the savannah'. Replace the letter 't' with 'u' in the sentence.

A: a giraffe walking in ius nauural habiuau on uhe savannah
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Q: Sentence: 'a couple of horses with carriages at a building'. Replace the letter 'u' with 'm' in the sentence.

A: a comple of horses with carriages at a bmilding
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Q: Sentence: 'a smiling man leans on the fence of a baseball field'. Replace the letter 'l' with 'x' in the sentence.

A:
a smixing man xeans on the fence of a basebaxx fiexd
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