With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Ridley
Park
is
a
borough
in
Delaware
County
,
Pennsylvania
,
United
States
.
Ridley:location-GPE
Park:location-GPE
is:O
a:O
borough:O
in:O
Delaware:location-GPE
County:location-GPE
,:O
Pennsylvania:location-GPE
,:O
United:location-GPE
States:location-GPE
.:O