create implication gradient_sky (183) -> sky (120468)
create implication multicolored_sky (104) -> sky (120468)
create implication two_tone_sky (22) -> multicolored_sky (104)
create implication clear_sky (304) -> sky (120468)
create implication cloudy_sky (579) -> cloud (74623)
create implication cloudy_sky (579) -> sky (120468)
create implication overcast (589) -> cloud (74623)