{
  "centroid":42.59493059608792,
  "trace": [
    "if days_to_flight is many_days [0.21] then price_increase is low [0.21].",
    "if days_to_flight is few_days [0.61] then price_increase is moderate [0.61].",
    "if days_to_flight is last_minute [0.00] then price_increase is high [0.00].",
    "⌖low×[0.21]+moderate×[0.61]+high×[0.00].",
    "⌖down(0,0,25)×[0.21]+tri(20,50,75)×[0.61]+up(70,100,100)×[0.00].",
    "⌖42.59."
  ],
  "what":"rules_result"
}