101950
Late that evening , around 70 miles south of Karachi , the Nipat detected a large target about 42 miles to the northeast , later identified as the merchant vessel , MV Venus Challenger , chartered by the Pakistan Navy to carry US ammunition to East Pakistan .
 location: Karachi
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: Karachi 
Answer:
 location: Karachi