枚舉

import java.util.Arrays;
import java.util.Scanner;
enum Color{
	red("Rose","red"),
	orange("Poppies","orange"), 
	yellow("Sunflower","yellow"), 
	green("Grass","green"), 
	blue("Bluebells","blue"), 
	violet("Violets","violet");
	
	String name;
	String color;
	Color(String name,String color){
		this.name=name;
		this.color=color;
	}
	public String toString(){
		return name+" are "+color+".";
	}
}
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner cin = new Scanner(System.in);
		while(cin.hasNext())
		{
			String str=cin.next();
			try{
				Color color=Color.valueOf(str);
				System.out.println(color);
			}
			catch(Exception e){
				System.out.println("I don't know about the color "+str+".");
			}
		}
         
	}
}