With no explanation, label each line with "O", "person-athlete", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
was
in
that
tournament
when
Montenegro
was
observed
by
a
talent-searcher
who
was
interested
in
his
services
;
subsequently
,
he
would
later
be
signed
by
CAI
Zaragoza
at
the
age
of
17
.
It:O
was:O
in:O
that:O
tournament:O
when:O
Montenegro:person-athlete
was:O
observed:O
by:O
a:O
talent-searcher:O
who:O
was:O
interested:O
in:O
his:O
services:O
;:O
subsequently:O
,:O
he:O
would:O
later:O
be:O
signed:O
by:O
CAI:organization-sportsteam
Zaragoza:organization-sportsteam
at:O
the:O
age:O
of:O
17:O
.:O