7859
Their original aim was to help the army , notably by opening a Suez Canal , mapping out roads and building mills to supply food .
 Suez Canal
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:
 Suez Canal