Look for the subject of the sentence

Sometimes, the subject appears at the end of a sentence, e.g., Вчера в Москву c рабочим визитом прибыла делегация американских конгрессменов (Yesterday in Moscow on a working visit arrived a delegation of American congressmen). The best way to approach sentences like this is to look for the subject first. This means that you should look for a noun in the nominative case. Where is the subject in the sentence above?