What was the question for this implicit rationale, and corresponding answer?
That A backhoe is digging a trench outside of a building does not imply it is moving dirt.
 The answer: it is not possible to tell
The question: Premise: "A backhoe is digging a trench outside of a building."
Hypothesis: "A backhoe is moving dirt."
Do we know that the hypothesis entailed by the premise?