| Extracting Rules from Wikipedia | As Wikipedia’s titles are mostly noun phrases, the terms we extract as RHSs are the nouns and noun phrases in the definition. |
| Extracting Rules from Wikipedia | It also enables us extracting additional rules by splitting conjoined noun phrases and by taking both the head noun and the complete base noun phrase as the RHS for separate rules (examples 1—3 in Table 1). |
| Extracting Rules from Wikipedia | Therefore, we further create rules for all head nouns and base noun phrases within the definition (example 4). |