301873
The 1998 NAPA Auto Parts Sebring Classic presented by Royal Purple Motor Oil was the sixth round of the 1998 IMSA GT Championship season .
 NAPA Auto Parts, Royal Purple Motor Oil
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 NAPA Auto Parts, Royal Purple Motor Oil