With no explanation, label each line with "location-GPE", "O", "event-other", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Venustiano
Carranza
,
President
of
Mexico
,
visited
San
Martín
de
Hidalgo
during
the
Mexican
Revolution
in
1916
.
Venustiano:person-politician
Carranza:person-politician
,:O
President:O
of:O
Mexico:location-GPE
,:O
visited:O
San:location-GPE
Martín:location-GPE
de:location-GPE
Hidalgo:location-GPE
during:O
the:O
Mexican:event-other
Revolution:event-other
in:O
1916:O
.:O