Column and heron’s aeolipile: what they have in common

1. Step 1. Column — is made of — Brick. Stone columns.
2. Step 2. Brick — is material for — Water tower. Water towers are brick.
3. Step 3. Water tower — has part — Centrifugal pump. Filled by pumps.
4. Step 4. Centrifugal pump — is part of — Coffee vending machine. A pump supplies the water.
5. Step 5. Coffee vending machine — is a kind of — Vending machine. A vending machine.
6. Step 6. Vending machine — was inspired by — Heron’s aeolipile. Heron described both a holy-water dispenser and the aeolipile; the dispenser is the prototype of the vending machine.

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