The Queen Is Dead (Once Upon a Time) the famous Princess Leia line, "Help me, Obi-Wan Kenobi. You're my only hope!" from "Star Wars". The lines that Mother Superior says before that is also a nod to Star Wars as is similar to what Obi-Wan Kenobi says after the destruction of Alderaan. Outside Storybrooke, Cora tells daughter Regina her horse, Rocinante, is ready. Rocinante is the name of Don Quijote's horse in the novel "El Ingenioso Hidalgo, Don Quijote de La Mancha" by Miguel de Cervantes. The outing saw a decrease from the previous episode, tied for second in its time period with a 2.2/6 among 18-49s with
Formal system of inference rules are decidable sets or semidecidable sets, respectively. The entailment of the system by its logical foundation is what distinguishes a formal system from others which may have some basis in an abstract model. Often the formal system will be the basis for or even identified with a larger theory or field (e.g. Euclidean geometry) consistent with the usage in modern mathematics such as model theory. A formal language is a language that is defined by a formal system. Like languages in linguistics, formal languages generally have two aspects: In computer science and linguistics a formal grammar is