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 (7, 4)
Distance from target shape to pink square at (8, 3): 2
Distance from target shape to red right_triangle at (9, 0): 6
Distance from target shape to purple right_triangle at (6, 6): 3
Distance from target shape to cyan trapezoid at (6, 3): 2
Distance from target shape to brown square at (0, 2): 9
Closest shape is the pink square at (8, 3) with distance 2</think>

<answer>(8, 3)</answer>