Input (grade 13): The Vailala Madness acquired its name from observations of the behavior of people who participated in it, which included glossolalia, shaking and psychosomatic symptoms.
Output (grade 8): The Vailala Madness got its name from the behavior of people who took part in it. This behavior included glossolalia (or "speaking in tongues"), shaking, and signs of mental or emotional disturbances.