Deck of playing cards and monitor: what they have in common

1. Step 1. Deck of playing cards — is part of — Playing cards. Cardboard sheets with suits and values.
2. Step 2. Playing cards — is made of — Paper. Cards were printed on paper.
3. Step 3. Paper — is material for — Loudspeaker. The cone is paper.
4. Step 4. Loudspeaker — is part of — Television set. Sound.
5. Step 5. Television set — has part — Cathode-ray tube. A picture tube.
6. Step 6. Cathode-ray tube — is part of — Monitor. The first monitors were CRTs.

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