Onbara Dam
Onbara Dam is a dam in the Okayama Prefecture , Japan , completed in 1927 . 
<triplet> Onbara Dam <subj> dam <obj> instance of <subj> Japan <obj> country <triplet> Okayama Prefecture <subj> Japan <obj> country <triplet> Japan <subj> Okayama Prefecture <obj> contains administrative territorial entity