5496
There are open slots in the side of the tube bottom to admit air into the stream using the Venturi effect , and the gas burns at the top of the tube once ignited by a flame or spark .
 person: Venturi
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Venturi 
Answer:
 person: Venturi