Premise: Two young girls have fun on a trampoline, one of which appears to be falling down onto her back while the other poses with a smile behind her.
Correct statement: It is certain that two young girls have fun on a trampoline, one of which appears to be falling down onto her back while the other poses with a smile behind her.
Incorrect statement: We doubt that two young girls have fun on a trampoline, one of which appears to be falling down onto her back while the other poses with a smile behind her.