sentences: water is a kind of liquid at room temperature & water is a kind of compound ->  water is a liquid compound at room temperature  water is made of hydrogen and oxygen & hydrogen is a kind of gas at room temperature & oxygen is a kind of gas at room temperature ->  water can be made by two gases hydrogen and oxygen  water is a liquid compound at room temperature & water can be made by two gases hydrogen and oxygen ->  water is the liquid compound that can be made by two gases hydrogen and oxygen  water is the liquid compound that can be made by two gases hydrogen and oxygen & liquid state is a kind of nongaseous state -> water is the nongaseous compound that can be made by two gases