With no explanation, label each line with "O", "person-artist/author", "other-law", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
UN
's
oceans
treaty
(
1982
)
is
greatly
fundamental
based
on
Evensen
's
work
.
The:O
UN:other-law
's:other-law
oceans:other-law
treaty:other-law
(:O
1982:O
):O
is:O
greatly:O
fundamental:O
based:O
on:O
Evensen:person-artist/author
's:O
work:O
.:O