create implication gradient_sky (239) -> sky (143766)
create implication multicolored_sky (110) -> sky (143766)
create implication two_tone_sky (24) -> multicolored_sky (110)
create implication clear_sky (484) -> sky (143766)
create implication cloudy_sky (1608) -> cloud (89672)
create implication cloudy_sky (1608) -> sky (143766)
create implication overcast (784) -> cloud (89672)