There are 2 shapes on a 6x6 grid. Which shape is closest to the brown 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: brown rectangle at (5, 1)
Distance from target shape to cyan right_triangle at (2, 4): 6
Closest shape is the cyan right_triangle at (2, 4) with distance 6</think>

<answer>(2, 4)</answer>