With no explanation, label each line with "O", "other-astronomything", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1792
,
Giuseppe
Piazzi
noticed
the
high
proper
motion
when
he
compared
his
own
observations
of
61
Cygni
with
those
of
Bradley
,
made
40
years
earlier
.
In:O
1792:O
,:O
Giuseppe:person-scholar
Piazzi:person-scholar
noticed:O
the:O
high:O
proper:O
motion:O
when:O
he:O
compared:O
his:O
own:O
observations:O
of:O
61:other-astronomything
Cygni:other-astronomything
with:O
those:O
of:O
Bradley:person-scholar
,:O
made:O
40:O
years:O
earlier:O
.:O