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While working in the shoe industry , Warhol developed his " blotted line " technique , applying ink to paper and then blotting the ink while still wet , which was akin to a printmaking process on the most rudimentary scale .
 Warhol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Warhol