With no explanation, label each line with "product-other", "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
In
1415
Lucerne
gained
``
Reichsfreiheit
``
from
Emperor
Sigismund
and
became
a
strong
member
of
the
Swiss
confederacy
.
In:O
1415:O
Lucerne:person-politician
gained:O
``:O
Reichsfreiheit:product-other
``:O
from:O
Emperor:person-politician
Sigismund:person-politician
and:O
became:O
a:O
strong:O
member:O
of:O
the:O
Swiss:location-GPE
confederacy:O
.:O