Hydrogen may use energy.Logical formLearned from18 sentences. (Hydrogen fuel) can be for cars.Logical formLearned from18 sentences. Some bottles can be constituted-of-or-filled-with (hydrogen peroxide).Logical formLearned from18 sentences. Hydrogen may have a proton.Logical formLearned from18 sentences. Hydrogen may be stored.Logical formLearned from18 sentences. A hydrogen can be high-pressure.Logical formLearned from18 sentences. A need can be for hydrogen.Logical formLearned from18 sentences. A hydrogen may be exhausted.Logical formLearned from18 sentences. A (hydrogen peroxide) can be liquid.Logical formLearned from18 sentences. A (hydrogen tank) may pertain-to a spacecraft.Logical formLearned from18 sentences. A (hydrogen bond) can be strong.Logical formLearned from17 sentences. Volumes can be constituted-of-or-filled-with hydrogen.Logical formLearned from17 sentences. (Hydrogen atoms) can be charged.Logical formLearned from17 sentences. (Hydrogen sulfide) can be gas.Logical formLearned from17 sentences. Hydrogen may undergo an introduction.Logical formLearned from17 sentences.