With no explanation, label each line with "location-GPE", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
served
abroad
as
director
of
UNESCO
's
Social
Science
Department
in
Paris
from
1949–1950
heading
up
a
project
on
world
tensions
.
He:O
served:O
abroad:O
as:O
director:O
of:O
UNESCO:organization-other
's:O
Social:organization-other
Science:organization-other
Department:organization-other
in:O
Paris:location-GPE
from:O
1949–1950:O
heading:O
up:O
a:O
project:O
on:O
world:O
tensions:O
.:O