What is the BMW M20 with the highest torque whose engine configuration is straight-six ?
select ?ent where { ?ent wdt:P31 wd:Q796558 . ?ent wdt:P2230 ?obj . ?ent wdt:P1002 wd:Q1148385 } ORDER BY DESC(?obj)LIMIT 5 
bmw m20: Q796558 straight-six: Q1148385