Determine the arousal intensity of the writer's mental state conveyed in the sentence "The 1933 double eagle, a $20 gold piece with a mysterious history that involves a president, a king and a Secret Service sting operation, was auctioned Tuesday last night for a record price for a coin, $7.59 million, nearly double the previous record.". Provide a score from 0 to 1, where 1 signifies very energetic and 0 signifies very calm.