With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
area
was
designated
as
a
national
recreation
area
in
1963
by
President
John
F.
Kennedy
.
The:O
area:O
was:O
designated:O
as:O
a:O
national:O
recreation:O
area:O
in:O
1963:O
by:O
President:O
John:person-politician
F.:person-politician
Kennedy:person-politician
.:O