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A 20-ton piece of the Titanic 's steel hull , which had been attached by cables to a recovery ship off the coast of Newfoundland , Canada , fell back to the bottom of the sea , said Erin Purcell of Boston-based Reagan Communications that represents two of the ships used in the expedition .
 else: Boston-based; location: Canada; organization: Reagan Communications; person: Erin Purcell; location: Newfoundland; else: Titanic
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 else: Boston-based; location: Canada; organization: Reagan Communications; person: Erin Purcell; location: Newfoundland; else: Titanic