TASK DEFINITION: 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.
PROBLEM: The supervisor provided the writer with new tools but she did not appreciate it .

SOLUTION: the, writer, she

PROBLEM: The cook asked the designer if his new dish can be improved .

SOLUTION: The, cook, his

PROBLEM: The manager told the clerk to report to work early because he is abusive .

SOLUTION:
The, manager, he