There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
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"The beverage industry is actually a system of small, independent businesses, some of which have been in the same families for generations," a spokesman for the American Beverage Association tells the BBC. "Many produce brands that have been around for more than 100 years."
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