There are 6 shapes on a 10x10 grid. Which shape is closest to the orange 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: orange square at (5, 6)
Distance from target shape to cyan square at (1, 3): 7
Distance from target shape to blue right_triangle at (3, 4): 4
Distance from target shape to purple trapezoid at (8, 3): 6
Distance from target shape to pink right_triangle at (8, 1): 8
Distance from target shape to gray right_triangle at (6, 9): 4
Closest shape is the blue right_triangle at (3, 4) with distance 4</think>

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