With no explanation, label each line with "person-soldier", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
August
1774
Yemelyan
Pugachev
unsuccessfully
attempted
to
storm
the
city
.
In:O
August:O
1774:O
Yemelyan:person-soldier
Pugachev:person-soldier
unsuccessfully:O
attempted:O
to:O
storm:O
the:O
city:O
.:O