9801
He performed during this time with violinists Carl Flesch , Szymon Goldberg , Joseph Wolfsthal and composer Paul Hindemith , the latter playing viola in a string trio with Feuermann and Wolfsthal ( later Goldberg ; see below ) .
 Carl Flesch, Szymon Goldberg, Joseph Wolfsthal, Paul Hindemith, Feuermann, Wolfsthal, Goldberg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Carl Flesch, Szymon Goldberg, Joseph Wolfsthal, Paul Hindemith, Feuermann, Wolfsthal, Goldberg