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 ":".
They
formally
founded
Bohemia
Interactive
in
May
1999
.
They:O
formally:O
founded:O
Bohemia:organization-company
Interactive:organization-company
in:O
May:O
1999:O
.:O