A (hydrogen sulfide) can be poisonous.Logical formLearned from21 sentences. Mixtures can be constituted-of-or-filled-with hydrogen.Logical formLearned from21 sentences. A (hydrogen gas) can be hot.Logical formLearned from21 sentences. Hydrogen may be used as a fuel.Logical formLearned from21 sentences. (Hydrogen gas) may undergo a flow.Logical formLearned from21 sentences. (Hydrogen atoms) may undergo a replacement.Logical formLearned from20 sentences. A (hydrogen bonding) can be strong.Logical formLearned from20 sentences. A hydrogen can be frozen.Logical formLearned from20 sentences. A (hydrogen fuel initiative) may pertain-to a president.Logical formLearned from20 sentences. Vehicles may be powered by hydrogen.Logical formLearned from20 sentences. A hydrogen may fuel station.Logical formLearned from20 sentences. A stream can be constituted-of-or-filled-with hydrogen.Logical formLearned from20 sentences. (Hydrogen sulfide) may smell.Logical formLearned from20 sentences. Hydrogen may react with oxygen.Logical formLearned from20 sentences. A network can be constituted-of-or-filled-with hydrogen.Logical formLearned from20 sentences.