(a) symbolize into sl using the following key: t ted's too tired. s the swamp stays open late. w wally likes to party. (1) wally likes to party only if the swamp stays open late. (2) the swamp stays open late if either wally likes to party or ted's not too tired. (3) ted's not too tired, but wally doesn't like to party. (b) symbolize into pl using the following key: b buffy vx x is a vampire axy cx x is courageous x attacks y sx x is a slayer tx x is thirsty (1) buffy is a slayer and courageous. (2) some slayers are not courageous. (3) only vampires are thirsty (4) no thirsty slayer is courageous (5) if some slayers are courageous, then no vampires are. (6) all slayers and vampires are thirsty and courageous. (7) some courageous vampire will attack buffy (8) every vampire is attacked by buffy.