With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
2nd
London
Heavy
Battery
also
formed
1st
and
2nd
Line
units
.
The:O
2nd:organization-other
London:organization-other
Heavy:organization-other
Battery:organization-other
also:O
formed:O
1st:organization-other
and:organization-other
2nd:organization-other
Line:organization-other
units:organization-other
.:O