7838
Discovered by the writer Tristan Tzara , he took the risk ( in times of war ) to diffuse the " Dada " review in the provence of Zurich .
 person: Tristan Tzara
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Tristan Tzara