With no explanation, label each line with "O", "other-chemicalthing", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
covalent
bonds
increase
the
stability
of
the
fibrin
clot
.
The:O
covalent:other-chemicalthing
bonds:other-chemicalthing
increase:O
the:O
stability:O
of:O
the:O
fibrin:other-biologything
clot:O
.:O