(Tear gas use) may violate international law.Logical formLearned from12 sentences. Explosions may be caused by (gas leaks).Logical formLearned from12 sentences. Anthrax can be for (manufacturing mustard gas).Logical formLearned from12 sentences. A blast may be caused by (gas cylinders).Logical formLearned from12 sentences. An explosion may damage a (gas station).Logical formLearned from12 sentences. Some grades can be constituted-of-or-filled-with gas.Logical formLearned from12 sentences. A (water damage) may cause a (gas leak).Logical formLearned from12 sentences. A sting of gas can be in air.Logical formLearned from12 sentences. Cannisters can be constituted-of-or-filled-with gas.Logical formLearned from12 sentences. Natural gas may increase by some percent.Logical formLearned from12 sentences. (Gas masks) can be makeshift.Logical formLearned from12 sentences. Gas may push.Logical formLearned from12 sentences. Protesters may throw gas.Logical formLearned from12 sentences. Gas may kill some persons.Logical formLearned from12 sentences. Shots can be constituted-of-or-filled-with gas.Logical formLearned from12 sentences.