/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.stream.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		List<String> str = Arrays.asList("Hello World","Welcome America");
		List<String> res = IntStream.range(0, str.size())
		        .mapToObj(i -> str.stream()
		                .map(s -> s.split(" ")[i])
		                .collect(Collectors.joining(" ")))
		        .collect(Collectors.toList());
        System.out.println(res);
	}
}

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