There are 4 shapes on a 7x7 grid. Which shape is closest to the cyan 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: cyan square at (5, 6)
Distance from target shape to gray trapezoid at (5, 2): 4
Distance from target shape to red rectangle at (4, 1): 6
Distance from target shape to pink right_triangle at (4, 3): 4
Closest shape is the gray trapezoid at (5, 2) with distance 4</think>

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