With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
What
attracted
him
initially
was
the
sturdy
brick
construction
of
the
place
,
which
made
him
feel
secure
,
he
would
tell
his
family
later
.
What:O
attracted:O
him:O
initially:O
was:O
the:O
sturdy:O
brick:O
construction:O
of:O
the:O
place:O
,:O
which:O
made:O
him:O
feel:O
secure:O
,:O
he:O
would:O
tell:O
his:O
family:O
later:O
.:O