1. ?
  2. ?
  3. ?
  4. ?
e.g With Umbrella A, I can hold both my umbrella and my drink.
e.g I can walk my dog on a rainy day and my dog stays dry with
Umbrella B.
e.g With Umbrella C, I can block the rain and still see ahead.
e.g I can share Umbrella D and stay dry with someone else.