8. A computing device, comprising: a logic subsystem configured to execute instructions; and a data storage subsystem comprising instructions stored thereon that are executable by the logic subsystem to receive a speech input comprising an indefinite quantitative term, determine a mapping of the indefinite quantitative term to a first definite quantity, apply the first definite quantity to an action performed via the computing device in response to the speech input, receive a follow-up speech input that requests performance of an additional quantity of the action performed, and modify the mapping of the indefinite quantitative term to a second definite quantity.
8. A computing device, comprising: a logic subsystem configured to execute instructions; and a data storage subsystem comprising instructions stored thereon that are executable by the logic subsystem to receive a speech input comprising an indefinite quantitative term, determine a mapping of the indefinite quantitative term to a first definite quantity, apply the first definite quantity to an action performed via the computing device in response to the speech input, receive a follow-up speech input that requests performance of an additional quantity of the action performed, and modify the mapping of the indefinite quantitative term to a second definite quantity. 9. The computing device of claim 8 , wherein the action is specified by the speech input, and wherein the indefinite quantitative term comprises a parameter for the action.