Glass of water and cannon: what they have in common

1. Step 1. Glass of water — is material for — Bread. It binds the dough.
2. Step 2. Bread — is made of — Grain. Bread is baked from flour ground from grain.
3. Step 3. Grain — is used in — Grain elevator. It stores and transfers grain.
4. Step 4. Grain elevator — has part — Watt steam engine. Dart’s first elevator was steam-driven.
5. Step 5. Watt steam engine — is part of — Ironclad. Steam engines.
6. Step 6. Ironclad — has part — Cannon. Artillery.

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