River Lagan
The River Lagan ( ; Ulster Scots: "Lagan Wattèr" ) is a major river in Northern Ireland which runs 53 . 5 miles ( 86 km ) from the Slieve Croob mountain in County Down to Belfast where it enters Belfast Lough , an inlet of the Irish Sea . 
<triplet> River Lagan <subj> Northern Ireland <obj> located in the administrative territorial entity <subj> 86 <obj> length <subj> Belfast Lough <obj> mouth of the watercourse <subj> Irish Sea <obj> mouth of the watercourse <triplet> Northern Ireland <subj> Belfast <obj> contains administrative territorial entity <triplet> County Down <subj> Northern Ireland <obj> located in the administrative territorial entity <triplet> Belfast Lough <subj> River Lagan <obj> tributary <triplet> Irish Sea <subj> River Lagan <obj> tributary