Determine the arousal intensity of the writer's mental state conveyed in the sentence "Returning successful patrollers have an even greater effect on foraging activity: foragers will not leave the nest unless a patroller returns (Gordon, 2002), and the rate of foraging in a colony can be controlled by rolling glass beads coated with cuticular hydrocarbons extracted from patrollers into the nest (Gordon & Greene, 2003; Greene & Gordon, 2007).". Provide a score from 0 to 1, where 1 signifies very energetic and 0 signifies very calm.