Task: Program Execution
Input (English): Sentence: 'a female driver stops and waits for a camel that is in front of her vehicle, while the passenger is in the process of photographing it'. Replace the letter 't' with 'x' in the sentence.
Output (English): a female driver sxops and waixs for a camel xhax is in fronx of her vehicle, while xhe passenger is in xhe process of phoxographing ix