question: ice:water:steam
choices.label: A B C D
choices.text: the han people:chinese:overseas chinese carbon dioxide:dry ice:extinguish fire diamond:graphite:pencil papers:thesis:author
explanation: both "ice" and "water" consist of water molecules, which also compose "steam". But the three are different in their physical forms. "han people" and "chinese" belong to the descendants of the chinese nation, and "overseas chinese" also belong to the descendants of the chinese nation, except that "han people", "chinese" and "overseas chinese" have different titles. "dry ice" is "carbon dioxide". both "carbon dioxide" and "dry ice" have the function of "fire extinguishing". However, the physical forms of "carbon dioxide" and "dry ice" are different, and "carbon dioxide" and "fire extinguishing" do not belong to the same category. "diamond" and "graphite" are carbon in essence, but "graphite" is the raw material of the "pencil". "paper" and "thesis" are different in nature.
relation: ice water steam R2.4
relation: the han people chinese overseas chinese R2.4