26700
In 1918 Baby Dodds , playing on riverboats with Louis Armstrong on the Mississippi , was modifying the military marching set-up and experimenting with playing the drum rims instead of woodblocks , hitting cymbals with sticks ( 1919 ) , which was not yet common , and adding a side cymbal above the bass drum , what became known as the ride cymbal .
 person: Baby Dodds; person: Louis Armstrong; location: Mississippi
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: Baby Dodds, Louis Armstrong, Mississippi 
Answer:
 person: Baby Dodds; person: Louis Armstrong; location: Mississippi