With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Following
the
arrivals
of
the
new
Class
379
units
on
Stansted
Express
services
,
the
Class
317/7s
and
317/8s
were
originally
used
alongside
other
Class
317s
as
a
common
pool
.
Following:O
the:O
arrivals:O
of:O
the:O
new:O
Class:product-train
379:product-train
units:O
on:O
Stansted:product-train
Express:product-train
services:O
,:O
the:O
Class:product-train
317/7s:product-train
and:O
317/8s:product-train
were:O
originally:O
used:O
alongside:O
other:O
Class:product-train
317s:product-train
as:O
a:O
common:O
pool:O
.:O