In this task, you will be given a sentence, and you need to identify the set of coreference words. Coreferences are generally a set of words in the text that refer to the same person or thing. Your output set of coreference words must be strictly present in the given input sentence. Do not use any outside knowledge to create the set of coreference words. If there is a 'the' article before the person or thing you should include 'the' as well. Please separate the coreference words by commas in the output.

Example Input: The salesperson hated the accountant because she never bought anything .
Example Output: the, accountant, she

Example Input: The carpenter made a wood lion for the accountant because he is generous .
Example Output: The, carpenter, he

Example Input: The carpenter admires the work of the hairdresser because he appreciates talent .
Example Output:
The, carpenter, he