text: A tropical wave , which had previously spawned Tropical Depression Six , interacted with an upper-level low pressure area to develop an area of deep convection near Hispaniola on July 23 , 2003 .
simplified: A tropical wave , which had also created Tropical Depression Six , combined itself with an upper-level low pressure area to create an area of deep convection near Hispaniola on July 23 , 2003 .