Answer the following question: What type of details about qabus can be gathered from the following bio? Bio: qabus ibn wushmagir -lrb- full name : '' abol-hasan qabus ibn wusmagir ibn ziyar sams al-maali '' , ; -lrb- died 1012 -rrb- -lrb- r. 977 -- 981 ; 997 -- 1012 -rrb- was the ziyarid ruler of gurgan and tabaristan in medieval iran . he was the son of vushmgir and a daughter of the bavandi ispahbad sharwin ii .
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- title - caption - reign - successor - death date - predecessor - father - birth date - name - image - death place - religion