With no explanation, label each line with "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
bridge
is
named
after
George
Washington
,
the
first
president
of
the
United
States
.
The:O
bridge:O
is:O
named:O
after:O
George:person-politician
Washington:person-politician
,:O
the:O
first:O
president:O
of:O
the:O
United:location-GPE
States:location-GPE
.:O