Premise: "Two children are running down the sidewalk in front of a building."\nHypothesis: "Children sit in the backseat of a car."\nDo we know that the hypothesis entailed by the premise?
Let’s work this out in a step by step way to be sure we have the right answer.
no
People who sit in a car can not be running down a sidewalk at the same time.

.

Thus, the answer is no