Keelefilosoofia raamat
try to explain the idea informally, without relying on technical notation.
I shall describe a very simple little language, nearly as simple as
Wittgenstein's builders' language but with a crucial distinguishing feature.
It has two terms or predicates, F and G, which correspond to the English
words "fat" and "greedy"; F denotes or applies to all and only the fat things in
the world and G applies to all and only the greedy things. The little language
(which I shall call "Oafish") also has two proper names: a, which denotes
Albert, and b, which denotes Betty. And it has a semantic rule for forming
subjectpredicate sentences: a sentence made by prefixing a predicate P to
a proper name n is true iff what n denotes is included among the things to
which P applies. And finally, Oafish contains two further expressions called
"sentence connectives": "not," which can be stuck onto any given sentence,
and "and," which can be inserted between two whole sentences to make a
annaabi.ee 
