With no explanation, label each line with "person-politician", "O", "event-disaster", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Their
first
Royal
commission
was
to
provide
photographs
for
Queen
Victoria
of
the
Hartley
Colliery
Disaster
in
January
1862
.
Their:O
first:O
Royal:organization-other
commission:organization-other
was:O
to:O
provide:O
photographs:O
for:O
Queen:person-politician
Victoria:person-politician
of:O
the:O
Hartley:event-disaster
Colliery:event-disaster
Disaster:event-disaster
in:O
January:O
1862:O
.:O