83212
Note that the span of the components of " A " and the components of " L " is not closed under Poisson brackets , because of the factor of on the right-hand side of this last relation .
 Poisson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Poisson