Santo Tirso
Santo Tirso is a city and municipality located in the north of Porto Metropolitan Area , 25 km from central Porto , Portugal . 
<triplet> Santo Tirso <subj> Porto Metropolitan Area <obj> located in the administrative territorial entity <triplet> Porto Metropolitan Area <subj> Santo Tirso <obj> has part <subj> Porto <obj> has part <triplet> Porto <subj> Porto Metropolitan Area <obj> located in the administrative territorial entity