With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
retaliation
,
multiple
countries
have
imposed
economic
sanctions
on
the
United
States
of
America
.
In:O
retaliation:O
,:O
multiple:O
countries:O
have:O
imposed:O
economic:O
sanctions:O
on:O
the:location-GPE
United:location-GPE
States:location-GPE
of:location-GPE
America:location-GPE
.:O