diff --git a/Parserv3.h b/Parserv3.h
index 154cffe..1fb63d7 100644
--- a/Parserv3.h
+++ b/Parserv3.h
@@ -7,17 +7,24 @@
 using namespace std;
 
 
-class Relation 
+class Relation
 {
 	string name;
 	
-	public:
+	Relation(string str)
+	{
+		name = str;
+	}
 	
+	void setRelation(string str)
+	{
+		name = str;
+	}	
 	string getName()
 	{
 		return name;
 	}
-}
+};
 
 
 
@@ -36,7 +43,7 @@ class Union
 	{
 		return "Union of " + Un1 + " and " + Un2;
 	}
-}
+};
 
 class Product
 {
@@ -53,9 +60,9 @@ class Product
 	{
 		return "Product of " + Pr1 + " and " + Pr2;
 	}
-}
+};
 
-class Difference()
+class Difference
 {
 	string D1;
 	string D2;
@@ -70,14 +77,14 @@ class Difference()
 	{
 		return "Difference of " + D1 + " and " + D2;
 	}
-}
+};
 
-class Rename()
+class Renaming
 {
 	string newName;
 	string oldName;
 	
-	Rename(string s1, string s2)
+	Renaming(string s1, string s2)
 	{
 		newName = s1;
 		oldName = s2;
@@ -87,156 +94,155 @@ class Rename()
 	{
 		return "Renaming " + oldName + " to " + newName;
 	}
-}
+};
 
-class Projection()
+class Projection
 {
 	string newName;
 	string oldName;
 	
-	Rename(string s1, string s2)
+	Projection(string s1, string s2)
 	{
 		newName = s1;
 		oldName = s2;
 	}
 	
-	string doRename()
+	string doProjection()
 	{
 		return "Projecting " + oldName + " onto " + newName;
 	}
-}
+};
 
-class Operand()
+class Operand
 {
 	string op;
 	
-	Operand(string str)
-	{
-		op = str;
-	}
+	public:
 	
-	void setOperand(string str)
-	{
-		op = str;
-	}
-	
-	string getOperand()
-	{
-		return op;
-	}
-}
+		Operand()
+		{
+		}
+		
+		Operand(string str)
+		{
+			op = str;
+		}
+		
+		void setOperand(string str)
+		{
+			op = str;
+		}
+		
+		string getOperand()
+		{
+			return op;
+		}
+};
 
-class Op()
+class Op
 {
 	string op;
 	
-	Op(string str)
-	{
-		op = str;
-	}
-	
-	void setOp(string str)
-	{
-		op = str;
-	}
-	
-	string getOp()
-	{
-		return op;
-	}
-}
+	public: 
+		Op()
+		{
+		}
+		
+		Op(string str)
+		{
+			op = str;
+		}
+		
+		void setOp(string str)
+		{
+			op = str;
+		}
+		
+		string getOp()
+		{
+			return op;
+		}
+};
 
-class Comparison()
+class Comparison
 {
 	Op op;
 	Operand operand1;
 	Operand operand2;
 	
-	Comparison(string str1, string str2, string str3)
-	{
-		operand1.setOperand(str1);
-		op.setOp(str2);
-		operand2.setOperand(str3);
-	}
+	public:
 	
-	void setComparison(string str1, string str2, string str3)
-	{
-		operand1.setOperand(str1);
-		op.setOp(str2);
-		operand2.setOperand(str3);
-	}
-	
-	string getComparison()
-	{
-		return op1.getOperand() + " " + op.getOp() + " " + op2.getOperand();
-	}
-}
+		Comparison(string str1, string str2, string str3)
+		{
+			operand1.setOperand(str1);
+			op.setOp(str2);
+			operand2.setOperand(str3);
+		}
+		
+		void setComparison(string str1, string str2, string str3)
+		{
+			operand1.setOperand(str1);
+			op.setOp(str2);
+			operand2.setOperand(str3);
+		}
+		
+		string getComparison()
+		{
+			return operand1.getOperand() + " " + op.getOp() + " " + operand2.getOperand();
+		}
+};
 
-class Conjunction()
+class Conjunction
 {
 	string conj;
-	
-	Conjunction(string str)
-	{
-		conj = str;
-	}
-	
-	void setConjunction(string str)
-	{
-		conj = str;
-	}
-	
-	string getConjunction()
-	{
-		return conj;
-	}
-}
+	public:
+		Conjunction(string str)
+		{
+			conj = str;
+		}
+		
+		void setConjunction(string str)
+		{
+			conj = str;
+		}
+		
+		string getConjunction()
+		{
+			return conj;
+		}
+};
 
-class Condition()
+class Condition
 {
 	string cond;
-	
-	Condition(string str)
-	{
-		cond = str;
-	}
-	
-	void setCondition(string str)
-	{
-		cond = str;
-	}
-	
-	string getCondition()
-	{
-		return cond;
-	}
-}
+	public:
+		Condition(string str)
+		{
+			cond = str;
+		}
+		
+		void setCondition(string str)
+		{
+			cond = str;
+		}
+		
+		string getCondition()
+		{
+			return cond;
+		}
+};
 
-class Selection()
+class Selection
 {
 	string select;
-	
-	Selection(string str)
-	{
-		select = str;
-	}
-	
-	string getSelection()
-	{
-		return select;
-	}
-}
-
-class expr
-{
-	Relation r;
-	
-	selection
-    projection
-    renaming
-	Union
-	difference
-    product
-
-}
-
+	public:
+		Selection(string str)
+		{
+			select = str;
+		}
+		
+		string getSelection()
+		{
+			return select;
+		}
+};