Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Extending temporal Links; A, B and C are events or temporal expressions.
| If (A overlap B) and (B overlap C) then (A overlap C) |
| If (A before B) and (B [before| overlap] C) then (A before C) |
| If (A after B) and (B [after| overlap] C) then (A after C) |
