European countries may be unaffected by an (ash cloud).Logical formLearned from5 sentences. Members may have some experiences of effects of clouds.Logical formLearned from5 sentences. A cloud of volcanic ash may shut_down (air traffic).Logical formLearned from5 sentences. A dispersal of a cloud can be slow.Logical formLearned from5 sentences. A trajectory may pertain-to a cloud.Logical formLearned from5 sentences. An (ash cloud) may cause a (flight disruption).Logical formLearned from5 sentences. An (ash cloud) may affect an arrival of a president.Logical formLearned from5 sentences. A cloud may wreck (travel plans).Logical formLearned from5 sentences. An (ash cloud) may become a menace to (air travel).Logical formLearned from5 sentences. A campaign may focuse on a cloud.Logical formLearned from5 sentences. Cloud may undergo a use.Logical formLearned from5 sentences. A try may spoil by clouds.Logical formLearned from5 sentences. A cloud can be constituted-of-or-filled-with fabric.Logical formLearned from5 sentences. Light may break through clouds.Logical formLearned from5 sentences. A (gas cloud) can be deadly.Logical formLearned from5 sentences.