With no explanation, label each line with "O", "product-ship", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
prepared
the
launch
sites
for
both
the
RMS
Queen
Mary
and
RMS
Queen
Elizabeth
including
necessary
dredging
of
the
Clyde
to
ensure
space
for
these
huge
ships
.
He:O
prepared:O
the:O
launch:O
sites:O
for:O
both:O
the:O
RMS:product-ship
Queen:product-ship
Mary:product-ship
and:O
RMS:product-ship
Queen:product-ship
Elizabeth:product-ship
including:O
necessary:O
dredging:O
of:O
the:O
Clyde:O
to:O
ensure:O
space:O
for:O
these:O
huge:O
ships:O
.:O