| P921 | main subject | ... | Q83790 (textbook) | textbook |
| P279 | subclass of | ... | Q1255828 (controversy) | controversy |
| P279 | subclass of | ... | Q10855470 (education issue) | education issue |
| P910 | topic's main category | ... | Q8845344 (Category:Textbook controversies) | Category:Textbook controversies |
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