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 ":".
It
exhibits
similar
reactivity
to
the
Tebbe
reagent
and
Wittig
reaction
.
It:O
exhibits:O
similar:O
reactivity:O
to:O
the:O
Tebbe:other-chemicalthing
reagent:other-chemicalthing
and:O
Wittig:other-chemicalthing
reaction:other-chemicalthing
.:O