building materials
preferred label: مصالح ساختمانی @fa
type: Concept
narrower: slates

roofs
preferred label: بام @fa
type: Concept
related: slates

slates
related: roofs
broader: rocks
broader: building materials
preferred label: سنگ لوح @fa
type: Concept

rocks
preferred label: سنگ‌‌ها @fa
type: Concept
narrower: slates