91801
Because of this unequal treatment , research finds that black women do not receive the same urgency in medical care and are not taken as seriously regarding pain they feel or complications they think they are having , as exemplified by the complications tennis-star Serena Williams faced during her delivery .
 Serena Williams
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Serena Williams