With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
later
revealed
that
Khalid
's
mother
is
Kent
Nelson
's
niece
,
making
Khalid
Kent
's
grandnephew
.
It:O
is:O
later:O
revealed:O
that:O
Khalid:person-other
's:O
mother:O
is:O
Kent:person-other
Nelson:person-other
's:O
niece:O
,:O
making:O
Khalid:person-other
Kent:person-other
's:O
grandnephew:O
.:O