2009 ABN AMRO World Tennis Tournament
It was the 37th edition of the event known as the ABN AMRO World Tennis Tournament , and is part of the ATP World Tour 500 series of the 2009 ATP World Tour . 
<triplet> ATP World Tour 500 series <subj> 2009 <obj> inception <triplet> 2009 ATP World Tour <subj> 2009 <obj> point in time