1998 VisionAire 500K
The 1998 VisionAire 500K was the seventh round of the 1998 Indy Racing League . 
<triplet> 1998 VisionAire 500K <subj> 1998 Indy Racing League <obj> part of <triplet> 1998 Indy Racing League <subj> 1998 <obj> point in time <subj> 1998 <obj> point in time