With no explanation, label each line with "O", "event-other", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Beginning
in
2015
,
Planet
Forward
began
holding
an
annual
contest
called
Storyfest
.
Beginning:O
in:O
2015:O
,:O
Planet:organization-company
Forward:organization-company
began:O
holding:O
an:O
annual:O
contest:O
called:O
Storyfest:event-other
.:O