Let's analyze the valence intensity of the sentence "Still others are less obvious but just as horrible; dogs fighting to the death for the benefit of blood thirsty gamblers; baby calves confined and malnourished to provide “milk-fed” veal for the gourmet; and the “accidental” drowning of porpoises in the nets of tuna fishermen.". Assign a real number between 0 and 1, where 0 indicates extremely negative and 1 indicates extremely positive.