There are 2 shapes on a 6x6 grid. Which shape is closest to the blue rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: blue rectangle at (1, 4)
Distance from target shape to brown square at (1, 1): 3
Closest shape is the brown square at (1, 1) with distance 3</think>

<answer>(1, 1)</answer>