- Running is a kind of movement
- An animal requires energy to move
- Hence, an animal requires energy to run

- An animal requires energy to run
- To require something means to need something
- Hence, an animal needs energy to run

- Food is a source of energy for animals / plants
- One can get something from a source
- So, animals get energy from food

- An animal needs energy to run
- Animals get energy from food
- So, an animal gets the energy it needs to run from food

- An animal gets the energy it needs to run from food
- A dog is a kind of animal
- Hence, a dog gets the energy it needs to run from food

So, a dog gets the energy it needs to run from food
Question: A dog gets the energy it needs to run from ___.
Context: - Food is a source of energy for animals / plants 
- Running is a kind of movement 
- To require something means to need something 
- A dog is a kind of animal 
- An animal requires energy to move 
- One can get something from a source