The mere fact thatticket sales in recent years for screenplay-based movies have exceeded those for book-based movies is insufficient evidence to conclude that writing screenplays now provides greater financial opportunity for writers.
The fact thatthe nearby city has a weakening economy does not prove that (does not support the claim that/does not ensure that/lends no strong support to the conclusion that) the city will not contribute significantly to tax revenues.
The fact thatthe student performance improved after the application of interactive computer instruction does not necessarily imply that the new teaching method is responsible for the achievements.
