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 lawyer declared the baker was a liar because he often jumped to conclusions .
Example Output: The, lawyer, he

Example Input: The mechanic gave the clerk a present because it was her birthday .
Example Output: the, clerk, her

Example Input: The analyst received care from the nurse but he did not mention his allergies .
Example Output:
The, analyst, he, his