2019 IAAF World Relays
The 2019 IAAF World Relays was held in Yokohama , Japan from May 11 to May 12 , 2019 . 
<triplet> 2019 IAAF World Relays <subj> Yokohama <obj> location <subj> May 12, 2019 <obj> end time <triplet> Yokohama <subj> Japan <obj> country