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He was sidelined for a lengthy period after picking up a knee injury in a league match against Southend United the following month , making a total of eight appearances in all competitions before his loan expired in May .
 Southend United
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:
 Southend United