A styrene process is disclosed that uses a dehydrogenation reactor and a transalkylation reactor and in which a significant portion of the benzene, the inhibitors, or both, recovered from the dehydrogenation reactor passes to the transalkylation reactor. A composition including one or more salt of a mono- andor dialkyl ester of a sulfonated dicarboxylic acid, where the dicarboxylic acid contains 4 to 8 carbon atoms and the alkyl groups are derived from 2-propylheptanol; and one or more organic solvents liquid at 20\xb0 C. an execution engine adapted to execute the optimized XQuery execution plan to retrieve XML data from the XML database, characterized in thatc. The first actuator is configured to generate at least a first portion of a haptic alert.