With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
was
followed
shortly
by
T-Mobile
US
on
June
27
,
2007
.
This:O
was:O
followed:O
shortly:O
by:O
T-Mobile:organization-company
US:organization-company
on:O
June:O
27:O
,:O
2007:O
.:O