n06785223
| type | n |
| lex_filenum | 10 |
| def | a difficult problem |
| Outgoing links | |
| Hypernym | problem |
| Derivationally related form | riddle → riddle; riddle → riddle |
| Incoming links | |
| Hyponym | problem |
| Derivationally related form | riddle → riddle; riddle → riddle |
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