import java.util.*;
import java.util.stream.*;
class Ideone
{
	public static void main(String[] args) {
        String sentence = "Who lives in a pineapple under the sea?"; 
        System.out.println(spinWords(sentence)); 
    }
 
      public static String spinWords(String sentence) {
        return Arrays.stream(sentence.split(" "))
          .map(word -> word.length() < 5 ? word : new StringBuilder(word).reverse().toString())
          .collect(Collectors.joining(" "));
      }
}

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