There are 3 shapes on a 8x8 grid. Which shape is closest to the blue 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: blue right_triangle at (2, 0)
Distance from target shape to red right_triangle at (2, 1): 1
Distance from target shape to pink trapezoid at (7, 2): 7
Closest shape is the red right_triangle at (2, 1) with distance 1</think>

<answer>(2, 1)</answer>