Equations involving relationships

[JeffreyBenjaminBrown]

Examples:

• "x #needs y" = "y #(is required by) x" (useful when merging data written by people who used different words for the same thing).
• "x #is urgent" = "my life #(depends on) x" | "my job #(depends on) x". Equations like this would permit greater brevity and faster data entry: If you write that your life depends on x, you won't have to write also that x is urgent.