1. A computer-implemented method for designating identifier-associated sentences, the computer-implemented method comprising: distinguishing, by a computer system including an electronic processor and at least one operatively associated memory, one or more sentences of a data source; storing said one or more distinguished sentences in said memory; associating each of said one or more distinguished sentences with an identifier, said identifier being unique to each sentence, resulting in one or more corresponding identifier-associated sentences; storing said one or more identifier-associated sentences in said memory; in response to receiving user input associated with a first identifier-associated sentence, said computer system designating a second identifier-associated sentence.