Relationships




Parents 
时距 
An interval of time. Note that a TimeInterval has both an extent and a location on the universal timeline. Note too that a TimeInterval has no gaps, i.e. this class contains only convex time intervals.

Children 
A四月  The Class of all Months which are April. 
 八月  The Class of all Months which are August. 
 十二月  The Class of all Months which are December. 
 二月  The Class of all Months which are February. 
 一月  The Class of all Months which are January. 
 七月  The Class of all Months which are July. 
 六月  The Class of all Months which are June. 
 三月  The Class of all Months which are March. 
 五月  The Class of all Months which are May. 
 十一月  The Class of all Months which are November. 
 十月  The Class of all Months which are October. 
 九月  The Class of all Months which are September. 