With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Upon
addition
of
ammonium
sulfate
to
the
solution
and
damping
in
of
the
solution
,
ferric
ammonium
sulfate
crystals
will
precipitate
.
Upon:O
addition:O
of:O
ammonium:other-chemicalthing
sulfate:other-chemicalthing
to:O
the:O
solution:O
and:O
damping:O
in:O
of:O
the:O
solution:O
,:O
ferric:other-chemicalthing
ammonium:other-chemicalthing
sulfate:other-chemicalthing
crystals:O
will:O
precipitate:O
.:O