213968
Patents Jevans holds several invention patents in the U.S. , including : Mechanism for efficient private bulk messaging , Mechanism for rendering scenes using an object drawing subsystem , Quality control mechanism for three-dimensional graphics rendering , and Multipass graphics rendering method and apparatus with re-traverse flag .
 Jevans
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jevans