Eskilstuna
The town is located on the River Eskilstunaån , which connects Lake Hjälmaren and Lake Mälaren . 
<triplet> Eskilstunaån <subj> Lake Hjälmaren <obj> origin of the watercourse <subj> Lake Mälaren <obj> mouth of the watercourse <triplet> Lake Mälaren <subj> Eskilstunaån <obj> inflows