201523
Pursuit guidance is a form of guidance widely used in older ground attack missile s. In pursuit guidance , the missile is steered so that the velocity vector of the missile always points at the target , i.e. it has always the direction of the line of sight .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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