With no explanation, label each line with "location-GPE", "O", "building-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Americans
believed
that
Chartres
Cathedral
was
being
used
by
the
enemy
.
The:O
Americans:location-GPE
believed:O
that:O
Chartres:building-other
Cathedral:building-other
was:O
being:O
used:O
by:O
the:O
enemy:O
.:O