1. a). Define "S-attribute grammar" and "L-attribute grammar". b). List one advantage of an attribute grammar over context free grammar. e). Is this grammar an "S-attribute grammar" or "L-attribute grammar? Explain your ans D T L T-int T real Li, id d .type:= T.type Ttype := integer .T.type := real !.type := L.type, addtype (id.entry, L.type) addtype (id.entry, L.type