105031
Playing career Sheffield United Lowton joined Sheffield United aged fifteen after a brief spell with Leeds United and progressed through Sheffield United 's youth set up to reserve level , converting from a full-back to a central defensive role in the process .
 Sheffield, Lowton, Sheffield United, Leeds United, Sheffield United 's youth set up
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sheffield, Lowton, Sheffield United, Leeds United, Sheffield United 's youth set up