52399
Medical researchers in 1974 found a measurable and significant difference in the presence of DDT in human milk between mothers who lived in New Brunswick and mothers who lived in Nova Scotia , " possibly because of the wider use of insecticide sprays in the past " .
 location: New Brunswick; location: Nova Scotia
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: New Brunswick, Nova Scotia 
Answer:
 location: New Brunswick; location: Nova Scotia