- Aluminum cans are made of aluminum
- Aluminum is recyclable
- Hence, aluminum cans are recyclable

- Aluminum cans are recyclable
- Recyclable means a material can be recycled / reused many times
- Hence, aluminum cans can be recyled many times

- Aluminum cans can be recyled many times
- An aluminum can is a kind of object
- An example of recycling is using an object to make a new object
- So, using aluminum cans to make a new object is an example of recycling

Therefore, using aluminum cans to make a new object is an example of recycling
Question: Which is the best example of recycling?
Context: - An aluminum can is a kind of object 
- Recyclable means a material can be recycled / reused many times 
- Aluminum cans are made of aluminum 
- Aluminum is recyclable 
- An example of recycling is using an object to make a new object