Last month , when Arthur Sempliner emptied the mailbox at his waterfront home in Douglaston , Queens , he noticed a curious letter from the United States Army Corps of Engineers .
Douglaston /location/neighborhood/neighborhood_of Queens
Queens /location/location/contains Douglaston
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Douglaston
LOCATION
Queens
LOCATION
/location/neighborhood/neighborhood_of
Queens
LOCATION
Douglaston
LOCATION
/location/location/contains