11. An article of manufacture comprising: a machine accessible medium storing executable instructions that, when accessed by a machine, cause the machine to determine, through a processor, whether an information in a current sentence is new or previously given in accordance with a semantic relationship in a vector space between the current sentence and a number of preceding sentences; assign, through the processor, a word prominence, for synthetic speech, to a word in the current sentence in accordance with the information determination; and generate, through an output device, a speech representative of the current sentence.
11. An article of manufacture comprising: a machine accessible medium storing executable instructions that, when accessed by a machine, cause the machine to determine, through a processor, whether an information in a current sentence is new or previously given in accordance with a semantic relationship in a vector space between the current sentence and a number of preceding sentences; assign, through the processor, a word prominence, for synthetic speech, to a word in the current sentence in accordance with the information determination; and generate, through an output device, a speech representative of the current sentence. 18. The article of manufacture of claim 11 , wherein the executable instructions, when accessed, further cause the machine, when assigning a word prominence to a word in the current sentence, to: emphasize the word in the current sentence when the word represents the new information; and de-emphasize the word in the current sentence when the word represents the previously given information.