43. The apparatus of claim 42 , wherein the at least one processor executes the instructions to identify the at least one portion of the text input that is to be rendered to carry contrastive stress at least in part by passing the plurality of fields to a function to identify the at least one portion that is to be rendered to carry contrastive stress.
42. The apparatus of claim 41 , wherein the at least one processor executes the instructions to generate the text input at least in part by identifying the at least one portion of the text input that is to be rendered to carry contrastive stress as at least one portion of at least one field of the plurality of fields that differs from at least one corresponding portion of at least one other field of the plurality of fields.