With no explanation, label each line with "event-attack/battle/war/militaryconflict", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
While
involvement
in
foreign
policy
went
poorly
,
British
trade
unions
grew
dramatically
in
membership
and
power
during
the
Second
World
War
.
While:O
involvement:O
in:O
foreign:O
policy:O
went:O
poorly:O
,:O
British:organization-other
trade:organization-other
unions:organization-other
grew:O
dramatically:O
in:O
membership:O
and:O
power:O
during:O
the:O
Second:event-attack/battle/war/militaryconflict
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
.:O