With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
group
was
formerly
thought
to
be
related
to
the
Reduviidae
because
of
similarities
in
head
structure
but
they
are
now
considered
different
enough
from
other
Heteroptera
to
constitute
a
separate
infraorder
and
represents
a
sister
group
of
the
Leptopodomorpha
.
The:O
group:O
was:O
formerly:O
thought:O
to:O
be:O
related:O
to:O
the:other-biologything
Reduviidae:other-biologything
because:O
of:O
similarities:O
in:O
head:O
structure:O
but:O
they:O
are:O
now:O
considered:O
different:O
enough:O
from:O
other:O
Heteroptera:O
to:O
constitute:O
a:O
separate:O
infraorder:O
and:O
represents:O
a:O
sister:O
group:O
of:O
the:O
Leptopodomorpha:other-biologything
.:O