With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
heyday
of
the
Free
State
was
over
by
the
1940s
.
The:O
heyday:O
of:O
the:O
Free:location-GPE
State:location-GPE
was:O
over:O
by:O
the:O
1940s:O
.:O