Task: Question Answering
Input (English): Hydrogen is located on the left side of the periodic table in the same column as the alkali metals, but it has characteristics of a nonmetal. Which of the following is a physical property of hydrogen?  
 (A) Hydrogen can bond to itself. (B) Hydrogen makes positive ions. (C) Hydrogen is a gas at room temperature. (D) Hydrogen is combustible.
Output (English): C