A (face mask) can be blue.Logical formLearned from5 sentences. Masks can be with (machine guns).Logical formLearned from5 sentences. (Gas masks) can be defective.Logical formLearned from5 sentences. A person may play with a mask.Logical formLearned from5 sentences. A stretcher may wear an (oxygen mask).Logical formLearned from5 sentences. (Airport wearing masks) may pertain-to a world-city.Logical formLearned from5 sentences. A mask may be fitted.Logical formLearned from5 sentences. Masks can be magical.Logical formLearned from5 sentences. Masks can be with eyes.Logical formLearned from5 sentences. A provenance may pertain-to a mask.Logical formLearned from5 sentences. Workers may wear (gas masks).Logical formLearned from5 sentences. (Rescue workers) can be in masks.Logical formLearned from5 sentences. (Face masks) may be worn.Logical formLearned from5 sentences. Policemen may wear surgical masks.Logical formLearned from5 sentences. (Air passengers) may wear protective masks.Logical formLearned from5 sentences.