const disciplines = {
"Arts and culture": ["design", "culture", "literature", "cinema and television", "theatre", "music", "dance"],
"History and Philosophy": ["history", "archeology", "religion", "philosophy"]
};
var s = "history";
for (key in disciplines){
if(disciplines[key].indexOf(s) >= 0){
console.log(key);
}
}
// "History and Philosophy"
Shift + Esc
(Быстрые клавиши для вызова функций Google Chrome -> Открыть диспетчер задач Chrome).