As the air rises the pressure lessens causing the barometer to have a lower reading.
(the air; rises; ) (the pressure; lessens causing; the barometer to have a lower reading; T:As the air rises) Context(the pressure lessens causing,List([17, 45))):(the barometer; to have; a lower reading)
the pressure lessens causing,List([17, 45))
the air the pressure the barometer
rises lessens causing to have
the barometer to have a lower reading T:As the air rises
a lower reading