7749
The majority of mariners to die worked on the Mersey flat boats and drowned due to the weather conditions or poor craft maintenance , although many ordinary civilians perished too .
 location: Mersey
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Mersey