There are 5 shapes on a 10x10 grid. Which shape is closest to the brown square 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 square at (7, 0)
Distance from target shape to purple trapezoid at (1, 7): 13
Distance from target shape to pink rectangle at (0, 6): 13
Distance from target shape to orange square at (4, 6): 9
Distance from target shape to cyan right_triangle at (4, 3): 6
Closest shape is the cyan right_triangle at (4, 3) with distance 6</think>

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