name the mountain located in isle of skye and has parent peak as sgùrr alasdair ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_locatedInArea dbr_Isle_of_Skye sep_dot var_uri dbo_parentMountainPeak dbr_Sgùrr_Alasdair sep_dot var_uri a dbo_Mountain brack_close