There are 3 shapes on a 9x9 grid. Which shape is closest to the gray 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: gray right_triangle at (0, 3)
Distance from target shape to pink square at (4, 6): 7
Distance from target shape to cyan trapezoid at (3, 0): 6
Closest shape is the cyan trapezoid at (3, 0) with distance 6</think>

<answer>(3, 0)</answer>