Visitors have ample opportunity to observe the birds by arranged boat trips (binoculars can add to the pleasurable sights).
(arranged boat trips; can add; to the pleasurable sights) (Visitors; have; ample opportunity to observe the birds by arranged boat trips (binoculars can add to the pleasurable sights)) Context(Visitors have,List([0, 13))):(Visitors; have to observe; the birds)
Visitors have,List([0, 13))
arranged boat trips Visitors Visitors
can add have have to observe
to the pleasurable sights
ample opportunity to observe the birds by arranged boat trips (binoculars can add to the pleasurable sights)
the birds