type(meas47, lld_alarm).
lld_left_length_cm(meas47, 21.548900464617255).
lld_right_length_cm(meas47, 23.45713444515475).
lld_discrepancy_cm(meas47, -1.9082339805374957).
lld_threshold_cm(meas47, 1.25).
lld_reason(meas47, "discrepancy below negative threshold").