Water chlorination and windlass: what they have in common

1. Step 1. Water chlorination — is used in — Plumbing. Tap water is disinfected.
2. Step 2. Plumbing — works like — Aqueduct. An aqueduct brings water to a city, plumbing distributes it inside; Minoan pipes are older than the Roman aqueducts.
3. Step 3. Aqueduct — has part — Arch. Roman aqueducts rested on arcades.
4. Step 4. Arch — is part of — Bridge. Stone bridges were built as arches.
5. Step 5. Bridge — includes — Drawbridge. A bridge.
6. Step 6. Drawbridge — has part — Windlass. Raised with a windlass.

Open Evothings