11. The system of claim 7 , wherein: the system further comprises a compiled rule set implementing the temporal translation grammar; and the expression translator applies the temporal translation grammar to the expression by invoking the compiled rule set implementing the temporal translation grammar to evaluate the expression.
11. The system of claim 7 , wherein: the system further comprises a compiled rule set implementing the temporal translation grammar; and the expression translator applies the temporal translation grammar to the expression by invoking the compiled rule set implementing the temporal translation grammar to evaluate the expression. 12. The system of claim 11 , wherein: the compiled rule set identifies the temporal elements of the expression; and the expression translator invokes the compiled rule set with the expression to identify the temporal elements of the expression according to the temporal training grammar.