(Silica fume) can be a material.Logical formLearned from3 sentences. (Silica fume) may be used as replacement of cement.Logical formLearned from3 sentences. Persons may sleep_off fumes of hours.Logical formLearned from3 sentences. Fumes may pertain-to hours.Logical formLearned from3 sentences. A present can be in fumes.Logical formLearned from3 sentences. Fumes can be from oil.Logical formLearned from3 sentences. Fumes can be in a (fuel tank).Logical formLearned from3 sentences. Fumes may explode during a crash.Logical formLearned from3 sentences. (Sulfur fumes) may be released.Logical formLearned from3 sentences. (Mystery fumes) may be felled.Logical formLearned from3 sentences. Fumes can be from burgers.Logical formLearned from3 sentences. Fumes can be from an (oxygen generator).Logical formLearned from3 sentences. Fumes may escape into the atmosphere.Logical formLearned from3 sentences. Fires may release some kinds of fumes.Logical formLearned from3 sentences. (Fume hoods) can be ventilated.Logical formLearned from3 sentences.