 Which group of people shares the most similarities with the group of patients in the mental institution, as they are described by the author?
Illustrated by Freas Miss Abercrombie, the manual therapist patted the old man on the shoulder. Miss Abercrombie smoothed her smock down over trim hips and surveyed the other patients working at the long tables in the hospital's arts and crafts shop. Two muscular and bored attendants in spotless whites, lounged beside the locked door and chatted idly about the Dodgers' prospects for the pennant. Through the barred windows of the workshop, rolling green hills were seen, their tree-studded flanks making a pleasant setting for the mental institution. The crafts building was a good mile away from the main buildings of the hospital and the hills blocked the view of the austere complex of buildings that housed the main wards. She stopped behind a frowning, intense patient, rapidly shaping blobs of clay into odd-sized strips and forms. Safely behind the patient's back, Miss Abercrombie smiled ever so slightly. A tall, blond patient with a flowing mustache, put one more dab of paint on his canvas and stood back to survey the meaningless smears. Moving slowly down the line of benches, she made short, precise notes on the day's work accomplished by each patient. At the clay table, she carefully lifted the top half of the clay ball and stared thoughtfully at the jumbled maze of clay strips laced through the lower hemisphere. As she drove out of the hospital grounds, Thaddeus Funston stood at the barred window of his locked ward and stared vacantly over the hills towards the craft shop. He stood there unmoving until a ward attendant came and took his arm an hour later to lead him off to the patients' mess hall. The sun set, darkness fell over the stilled hospital grounds and the ward lights winked out at nine o'clock, leaving just a single light burning in each ward office. The brilliance of a hundred suns glared in the night and threw stark shadows on the walls of the suddenly-illuminated ward. An instant later, the shattering roar and blast of the explosion struck the hospital buildings in a wave of force and the bursting crash of a thousand windows was lost in the fury of the explosion and the wild screams of the frightened and demented patients. Thaddeus Funston took his hands from his face and lay back in his bed with a small, secret smile on his lips. At 5:30 a.m., a plane landed at a nearby airfield and a platoon of Atomic Energy Commission experts, military intelligence men, four FBI agents and an Army full colonel disembarked. At 5:45 a.m. a cordon was thrown around both the hospital and the blast crater. In Ward 4-C, Thaddeus Funston slept peacefully and happily.
 A Kindergarten class
 A circus troupe  A disorderly mob  An artists' collective  A Kindergarten class