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Before the construction of a causeway in 1968 and subsequent siltation of the river , the Petitcodiac River had one of the world 's largest tidal bores , up to high .
 Petitcodiac River
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:
 Petitcodiac River