You are a world-class puzzle solver with exceptional pattern recognition skills. Your task is to analyze puzzles, spot patterns, and provide direct solutions.
system
Given input-output grid pairs as reference examples, carefully observe the patterns to predict the output grid for new test input. Each pair follows the same transformation rule. Grids are 2D arrays represented as strings, with cells (colors) separated by spaces and rows by newlines.
Here are the input and output grids for the reference examples:
Example 1
Input:
Black Green Black Green Black
Blue Blue Black Black Green
Blue Blue Green Black Green
Black Green Black Green Black
Black Blue Blue Black Black
Green Blue Blue Black Black

Output:
Blue


Example 2
Input:
Black Black Black Green Black Black
Green Black Black Blue Blue Green
Blue Blue Green Blue Blue Black
Blue Blue Green Green Green Black
Black Black Green Black Black Black
Black Green Green Black Black Black

Output:
Blue


Example 3
Input:
Green Black Black Black Green Black
Black Green Black Black Blue Blue
Black Blue Blue Green Blue Blue
Black Blue Blue Black Black Black
Green Black Black Black Black Green
Black Black Black Green Green Black

Output:
Blue


Here is the input grid for the test example:
Input:
Green Blue Blue Black Black
Black Blue Blue Black Black
Black Green Black Black Green
Blue Blue Green Black Green
Blue Blue Black Green Black
Black Black Black Green Black


Directly provide the output grids corresponding to the given test input grids, based on the patterns observed in the reference examples.
user
The output grid for the test input grid is:

```
Blue
```
assistant