Some hydrides may have (hydrogen bonds).Logical formLearned from2 sentences. A (hydrogen atom) may undergo an interaction.Logical formLearned from2 sentences. An organic compound may consist of hydrogen.Logical formLearned from2 sentences. Hydrogen may be produced on-site.Logical formLearned from2 sentences. (Hydrogen bonds) can be transient.Logical formLearned from2 sentences. Stars may convert a supply of hydrogen.Logical formLearned from2 sentences. Some hydrogen may be built in some cities.Logical formLearned from2 sentences. A firm may produce a (hydrogen run motorcycle).Logical formLearned from2 sentences. A (hydrogen fuel cell bus prototype) can be in a country.Logical formLearned from2 sentences. A hydrogen may undergo a discovery.Logical formLearned from2 sentences. Hydrogen may burn in chlorine.Logical formLearned from2 sentences. Hydrogen may be generated from a combustion of some fossil fuels.Logical formLearned from2 sentences. (Hydrogen fuel) may manifest effectiveness.Logical formLearned from2 sentences. Heat may be generated from gravitational collapse of (hydrogen clouds).Logical formLearned from2 sentences. Gravitational collapse can be constituted-of-or-filled-with (hydrogen clouds).Logical formLearned from2 sentences.