Task: Determine the valence intensity of the sentence, indicating a degree of positivity or negativity on a scale from 0 (strongly negative) to 1 (strongly positive), reflecting the emotional content expressed.
Sentence: Antie will also need to follow several different kinds of chemical gradient trails: it will need to track the trails left by successful patrollers, and localize the source of food-odors and midden-odors.
Intensity score: 