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 ":".
This
phenomenon
,
an
example
of
fluxionality
,
is
explained
by
the
migration
of
the
silyl
group
from
carbon-to-carbon
,
thereby
giving
the
appearance
of
equivalent
CH
signals
.
This:O
phenomenon:O
,:O
an:O
example:O
of:O
fluxionality:O
,:O
is:O
explained:O
by:O
the:O
migration:O
of:O
the:O
silyl:other-chemicalthing
group:other-chemicalthing
from:O
carbon-to-carbon:other-chemicalthing
,:O
thereby:O
giving:O
the:O
appearance:O
of:O
equivalent:O
CH:other-chemicalthing
signals:other-chemicalthing
.:O