20329
It had a step-through frame rather than the diamond frame of the gentlemen 's model so that ladies , with their dresses and skirts , could easily mount and ride their bicycles , and commonly came with a skirt guard to prevent skirts and dresses becoming entangled in the rear wheel and spokes .
 None
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:  
Answer:
 None