List of Ordered Facts
00001 ~ 00999 Logic
00500 ~ 00599 Logical Fallacies
01000 ~ 09999 Mathematics
01400 ~ 01999 Set Theory
02000 ~ 02999 Unit Conversion Equations
02000 ~ 02099 Mass & Weight
02100 ~ 02199 Length & Distance
02200 ~ 02299 Volume
02300 ~ 02399 Time
02400 ~ 02499 Luminosity
10000 ~ 19999 Computer Science
20000 ~ 29999 Physics
30000 ~ 39999 Chemistry