Assertion: hornet | /r/CapableOf | release pheromone
Facets:
value: to callfor back-up
type: PURPOSE
Source sentences:
text: Similarly, an encounter with a single hornet can quickly attract a horde because the hornets release a pheromone to "call" for back-up when they feel threatened.
text: If a hornet is killed near a nest, it may release pheromones that can cause the other hornets to attack.
text: When hornets are killed near a nest, they may also release pheromones that cause other hornets to start attacking.