A knot can be constituted-of-or-filled-with gas.Logical formLearned from11 sentences. A dependence can be on gas.Logical formLearned from11 sentences. A (column density) may pertain-to gas.Logical formLearned from11 sentences. Globules can be constituted-of-or-filled-with gas.Logical formLearned from11 sentences. Glowing clouds can be constituted-of-or-filled-with gas.Logical formLearned from11 sentences. Gas may be seen.Logical formLearned from11 sentences. Gas may undergo measurements.Logical formLearned from11 sentences. A route may pertain-to a (gas pipeline).Logical formLearned from11 sentences. A natural gas may undergo marketing.Logical formLearned from11 sentences. Gas may pass.Logical formLearned from11 sentences. Gas can be constituted-of-or-filled-with electrons.Logical formLearned from11 sentences. An increase can be in (greenhouse gas concentrations).Logical formLearned from11 sentences. Gas may undergo an ignition.Logical formLearned from11 sentences. A shift can be to natural gas.Logical formLearned from11 sentences. Gas can be parallel.Logical formLearned from11 sentences.