If you monitor a mobile phone number please be advised that your mobile phone operator may charge an additional premium for diverting to a premium rate number.
(you; monitor; ) (a mobile phone number; be advised; that your mobile phone operator may charge an additional premium for diverting to a premium rate number) Context(a mobile phone number be advised,List([15, 54))):(your mobile phone operator; may charge; an additional premium; for diverting to a premium rate number)
a mobile phone number be advised,List([15, 54))
you a mobile phone number your mobile phone operator
monitor be advised may charge
that your mobile phone operator may charge an additional premium for diverting to a premium rate number
an additional premium for diverting to a premium rate number