"Early childbearing does not necessarily predict a downward spiral into poverty."
Each of the following three scenes introduces a character, and not one you'd necessarily predict.
However, a high score does not necessarily predict success in a high level job.
Associated with a brain structural abnormality, and does not necessarily predict the affected hemisphere.
"I can't necessarily predict how the other phases will go."
But major crises do happen, and we can't necessarily predict them.
Such spread does not necessarily predict the virulence with which the cancer attacked Mantle.
But short-term sales totals don't necessarily predict long-term success.
Still, polls in the spring do not necessarily predict votes in the fall.
"They don't necessarily predict what will end up on the runway."