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Sigma KEE - averageRainfallForPeriod
(averageRainfallForPeriod ?AREA ?MO ?AMOUNT) means that ?AREA receives ?AMOUNT of rain in month ?MO in an average year. Note that ?AMOUNT is a linear measure indicating the depth of water that would accumulate over ?AREA if all water were captured.
Properties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium. Instances of Abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place and time without some physical encoding or embodiment.
The universal class of individuals. This is the root node of the ontology.
The class of
s whose properties can be inherited downward in the class hierarchy via the
is a sentence-forming
. Each tuple in the
is a finite, ordered sequence of objects. The fact that a particular tuple is an element of a
is denoted by '(*predicate* arg_1 arg_2 .. arg_n)', where the arg_i are the objects so related. In the case of
s, the fact can be read as `arg_1 is *predicate* arg_2' or `a *predicate* of arg_1 is arg_2'.
of relations. There are two kinds of
s both denote sets of ordered n-tuples. The difference between these two
es is that
s cover formula-forming operators, while
s cover term-forming operators.
s that require exactly three arguments.
s relate three items. The two
Belongs to Class
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