Umbrella and zip: what they have in common

1. Step 1. Umbrella — is made of — Silk. The canopy is made of silk.
2. Step 2. Silk — works like — Nylon. Nylon was created as a substitute for silk.
3. Step 3. Nylon — is material for — Backpack. Nylon.
4. Step 4. Backpack — has part — Zip. Zips.

Open Evothings