With no explanation, label each line with "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
recent
years
,
Melissanidis
has
been
active
in
various
social
and
athletic
causes
.
In:O
recent:O
years:O
,:O
Melissanidis:person-athlete
has:O
been:O
active:O
in:O
various:O
social:O
and:O
athletic:O
causes:O
.:O