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The first section near Woolwich was under construction by 1921 , as it ran on open land that was easy to purchase , but plans for the remainder of the route had not yet been decided and there were delays due to compulsory purchasing of properties .
 Woolwich
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Woolwich