368668
In the wake of the treaty , French troops moved to occupy key ports and settlements in the Austrian Netherlands such as Ostend and Nieuport – freeing up their Austrian garrisons to move east to attack Prussia .
 Ostend, Nieuport, Prussia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ostend, Nieuport, Prussia