241592
Mattias Karlsson ( born April 15 , 1985 ) is a Swedish professional ice hockey player , currently contracted by HV71 in the Swedish elite league Elitserien .
 Mattias Karlsson, HV71
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mattias Karlsson, HV71