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 ":".
Moreover
,
Snorri
tells
us
about
Harald
's
relationship
with
the
King
Æthelstan
and
Harald
's
son
Håkon
,
later
Haakon
the
Good
.
Moreover:O
,:O
Snorri:person-other
tells:O
us:O
about:O
Harald:person-politician
's:O
relationship:O
with:O
the:O
King:O
Æthelstan:person-politician
and:O
Harald:person-other
's:O
son:O
Håkon:person-other
,:O
later:O
Haakon:person-other
the:O
Good:O
.:O