88082
Optician John Dollond ( 1706 – 1761 ) tried to correct for this distortion by combining two separate lenses , but it was still difficult to achieve good resolution for far distant light sources .
 person: John Dollond
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: John Dollond 
Answer:
 person: John Dollond