SP500215 Appendix B: System Features Appendix National Institute of Standards and Technology D. K. Harman [C. CONSTRUCTION OF INDICES, KNOWLEDGE BASES, AND OThER DATA STRUCTURES -- DATA BUILT FROM OThER SOUR( `tr 1009000 root forms for English words (`exical items). c CLARIT lexicon was manually constructed using word lists extracted from onAine sources during early phases of the CLARIT research project (1988-1 13.9 MB (for lexicon built from LDOCE) 0.3 MB (for proper noun knowledge base) 1.1 MB (for verb and normalization verb case frame) 43,941 (`exicon) 99889 (`)roper noun knowledge base) 28,839 (case frame) inverted index (`exicon) frames [OCRerr]roper noun knowledge base) case frames used as rules for concept-relation[OCRerr]oncept triples (case frame) 10 hours Qexicon) 10 hours (proper noun knowledge base) 24 hours (1exicon) 124 hours (proper noun knowledge base)