There are 3 shapes on a 7x7 grid. Which shape is closest to the cyan 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: cyan right_triangle at (3, 0)
Distance from target shape to pink rectangle at (5, 5): 7
Distance from target shape to brown square at (0, 5): 8
Closest shape is the pink rectangle at (5, 5) with distance 7</think>

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