With no explanation, label each line with "location-GPE", "O", "organization-company", "product-car", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
London
,
Tilbury
and
Southend
Railway
51
class
was
a
class
of
4-4-2T
steam
locomotives
.
The:O
London:location-GPE
,:O
Tilbury:organization-company
and:O
Southend:organization-company
Railway:organization-company
51:O
class:O
was:O
a:O
class:O
of:O
4-4-2T:product-car
steam:O
locomotives:O
.:O