With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Upgrades
to
the
Algol
motor
occurred
from
1960
till
the
retirement
of
the
Scout
launch
vehicle
in
1994
.
Upgrades:O
to:O
the:O
Algol:product-other
motor:O
occurred:O
from:O
1960:O
till:O
the:O
retirement:O
of:O
the:O
Scout:product-other
launch:O
vehicle:O
in:O
1994:O
.:O