Some saws have other sources of power and can be very powerful, such as a chainsaw that is used to cut down trees.
(Some saws; have; other sources of power) (Some saws; can be; very powerful) (a chainsaw; is used; to cut down trees) (a chainsaw; to cut down; trees)
Some saws Some saws a chainsaw a chainsaw
have can be is used to cut down
other sources of power
very powerful
to cut down trees
trees