There are 4 shapes on a 5x5 grid. Which shape is closest to the brown trapezoid 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 trapezoid at (4, 3)
Distance from target shape to gray right_triangle at (3, 4): 2
Distance from target shape to cyan rectangle at (0, 2): 5
Distance from target shape to green square at (2, 0): 5
Closest shape is the gray right_triangle at (3, 4) with distance 2</think>

<answer>(3, 4)</answer>