4. Consider two grammars Gi and G2 over the alphabet (a, b], with respective start symbols E and I and specified by the respective sets of production rules below: EFab (a) Do the two grammars generate the same language? If they do, briefly argue why. If they do not, provide a counter-example, that is, a word generated by one, but not by the other (b) The grammar G2 is unnecessarily complicated. Write a grammar that generates the same language generated by G2 but uses only one non-terminal symbol