This is the starting set of facts for Question #8 on Homework #4.
Copy these into your Prolog database file (remember, there's a video
on D2L that shows you how to create one, and how to do everything else
you'll need to do for this question), and add the rest of the facts
and your two rules.

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firstyear(phillies,1883).
firstyear(braves,1966).
firstyear(mets,1962).
firstyear(nationals,2005).
firstyear(marlins,2012).
firstyear(brewers,1970).
firstyear(cardinals,1900).
firstyear(cubs,1902).
firstyear(reds,1959).
firstyear(pirates,1891).
firstyear(dodgers,1958).
firstyear(padres,1969).
firstyear(diamondbacks,1998).
firstyear(giants,1958).
firstyear(rockies,1993).
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