18660
There are so many cars on the highway that I cannot recognize but I think there is a Grey Dongfeng Dfsk c three seven driving LEFT with 83 km/h and a blue BMW 523i driving this way at a speed of 71 kilometers per hour
 color of vehicle: Grey; brand of vehicle: Dongfeng; vehicle model: Dfsk c three seven; orientation of vehicle: LEFT; vehicle velocity: 83; color of vehicle: blue; brand of vehicle: BMW; vehicle model: 523i; orientation of vehicle: this way; vehicle velocity: 71 kilometers per hour
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: vehicle type, position of vehicle, color of vehicle, orientation of vehicle, vehicle velocity, vehicle range, brand of vehicle, vehicle model, SUV, hatchback, sports car, sedan, bus, truck, vintage car, coupe, roadster, estate car, motorcycle, MPV, van 
Text: {0} 
 Entities: Grey, Dongfeng, Dfsk c three seven, LEFT, 83, blue, BMW, 523i, this way, 71 kilometers per hour 
Answer:
 color of vehicle: Grey; brand of vehicle: Dongfeng; vehicle model: Dfsk c three seven; orientation of vehicle: LEFT; vehicle velocity: 83; color of vehicle: blue; brand of vehicle: BMW; vehicle model: 523i; orientation of vehicle: this way; vehicle velocity: 71 kilometers per hour