There are 5 shapes on a 8x8 grid. Which shape is closest to the yellow square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow square at (7, 5)
Distance from target shape to green square at (3, 1): 8
Distance from target shape to pink rectangle at (1, 0): 11
Distance from target shape to purple trapezoid at (6, 4): 2
Distance from target shape to orange right_triangle at (2, 7): 7
Closest shape is the purple trapezoid at (6, 4) with distance 2</think>

<answer>(6, 4)</answer>