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 ":".
Westchester
Library
System
(
WLS
)
is
the
library
system
for
the
residents
of
Westchester
County
,
New
York
.
Westchester:O
Library:O
System:O
(:O
WLS:O
):O
is:O
the:O
library:O
system:O
for:O
the:O
residents:O
of:O
Westchester:location-GPE
County:location-GPE
,:O
New:location-GPE
York:location-GPE
.:O