- A airplane is used for moving products across bodies of water
- A ship is used for moving products across bodies of water
- Therefore, ship or airplane can move products across bodies of water

- Ship or airplane can move products across bodies of water
- An ocean is a kind of body of water
- Hence, ship or airplane can move products across ocean

So, ship or airplane can move products across ocean
You need to move products across the ocean from Boston to Europe. What are your choices?
- An ocean is a kind of body of water 
- A airplane is used for moving products across bodies of water 
- A ship is used for moving products across bodies of water