> language is older. LISP became the favored programming language for artificial intelligence research. All program code is written as parenthesized lists. The Knowledge Interchange Format (<a href="http://logic.stanford.edu/kif/dpans.html">KIF</a>), which has a LISP-like format, was created to serve as a syntax for first-order logic. The IFF language (or logical notation) (Table&nbsp;1), which is a vastly simplified and modified version of KIF, also has a LISP-like format. The IFF language contains both lo