With no explanation, label each line with "O", "person-politician", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Five
historic
structures
are
preserved
at
the
site
,
including
the
childhood
home
of
Ulysses
'
wife
,
Julia
Dent
Grant
.
Five:O
historic:O
structures:O
are:O
preserved:O
at:O
the:O
site:O
,:O
including:O
the:O
childhood:O
home:O
of:O
Ulysses:person-politician
':O
wife:O
,:O
Julia:person-other
Dent:person-other
Grant:person-other
.:O