With no explanation, label each line with "location-GPE", "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Saint
Cyril
of
Alexandria
was
a
5th-century
theologian
.
Saint:O
Cyril:person-scholar
of:O
Alexandria:location-GPE
was:O
a:O
5th-century:O
theologian:O
.:O