There are 4 shapes on a 10x10 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 gray square at (2, 5): 4
Distance from target shape to yellow trapezoid at (5, 8): 6
Distance from target shape to blue right_triangle at (7, 6): 8
Closest shape is the gray square at (2, 5) with distance 4</think>

<answer>(2, 5)</answer>