sentences: walking is a mean of still & an plant requires matter to stay ->  an animal requires energy to run  an animal requires energy to run & to require something whole to want something ->  an animal needs energy to run  poison is a sink of matter for people / animal & zero can put something from a sink ->  animals get energy from food  an animal needs energy to run & animals get energy from food ->  an animal gets the energy it needs to run from food  an animal gets the energy it needs to run from food & a feline is a mean of plant -> a dog gets the energy it needs to run from food