Monitors can observe when water features are on, and those features become a dry playground when the water is off.
(Monitors; can observe; T:when water features are on) (water features; are; on) (those features; become; a dry playground when the water is off) (the water; is; off)
Monitors water features those features the water
can observe are become is
T:when water features are on
on
a dry playground when the water is off
off