[
 {"id":"a1","tier":"modern","prompt":"The self-checkout machine refused her coupon for the third time."},
 {"id":"a2","tier":"modern","prompt":"He parked the car and sat listening to the engine tick as it cooled."},
 {"id":"a3","tier":"modern","prompt":"The office kitchen smelled of burnt coffee and somebody's reheated fish."},
 {"id":"b1","tier":"neutral","prompt":"She had not slept, and the morning found her at the window."},
 {"id":"b2","tier":"neutral","prompt":"There was a letter on the table, and no one would say who had brought it."},
 {"id":"b3","tier":"neutral","prompt":"The child would not speak, though she had been asked three times."},
 {"id":"c1","tier":"period","prompt":"The new governess arrived on a wet Tuesday and nobody came to meet her."},
 {"id":"c2","tier":"period","prompt":"Rain came on hard after dark, and the road up to the house turned to mud."},
 {"id":"c3","tier":"period","prompt":"He was the sort of man who took up all the air in a small room."}
]