The binoculars could be used to observe the birds up close as they fly.
(The binoculars; could be used; to observe the birds up close) (The binoculars; to observe; the birds; T:up close as they fly) (they; fly; )
The binoculars The binoculars they
could be used to observe fly
to observe the birds up close
the birds T:up close as they fly