premise: Firemen clean up the scene of a major motor vehicle accident, in which a sedan and a truck collided and are both smashed. hypothesis: The firemen are cleaning up the crash because its their truck that caused it.
neutral: The fact that firemen clean up the scene of a major motor vehicle accident, in which a sedan and a truck collided and are both smashed doesn't imply that they are doing the cleaning because its their truck that caused it.