With no explanation, label each line with "person-athlete", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
MacKenzie
has
been
a
keen
supporter
of
Charlton
Athletic
F.C
.
MacKenzie:person-athlete
has:O
been:O
a:O
keen:O
supporter:O
of:O
Charlton:O
Athletic:O
F.C:O
.:O