There are 6 shapes on a 8x8 grid. Which shape is closest to the orange right_triangle 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 right_triangle at (0, 7)
Distance from target shape to cyan trapezoid at (5, 4): 8
Distance from target shape to blue right_triangle at (6, 2): 11
Distance from target shape to brown right_triangle at (4, 0): 11
Distance from target shape to purple square at (0, 2): 5
Distance from target shape to yellow trapezoid at (4, 1): 10
Closest shape is the purple square at (0, 2) with distance 5</think>

<answer>(0, 2)</answer>