question: plastic:container
choices.label: A B C D
choices.text: lime:cement ceramic:tableware pier:bridge timber:wood
explanation: a "container" may be made of "plastic". the building materials are "lime" and "cement", and "lime" and "cement" are one class. "tableware" may be made of "ceramic". a "pier" is part of a "bridge". "wood" belongs to "timber".
relation: plastic container R3.7
relation: lime cement R2.4
relation: ceramic tableware R3.7
relation: pier bridge R2.3
relation: wood timber R2.2