With no explanation, label each line with "location-GPE", "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
This
was
formerly
the
Governor
's
Pavilion
until
1972
when
Sri
Lanka
became
a
republic
.
This:O
was:O
formerly:O
the:O
Governor:building-other
's:building-other
Pavilion:building-other
until:O
1972:O
when:O
Sri:location-GPE
Lanka:location-GPE
became:O
a:O
republic:O
.:O