390506
After winning the first four races of the season Abt took the championship lead which he would keep for the whole season , while Alzen battled to close the points gap .
 Abt, Alzen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Abt, Alzen