There are 5 shapes on a 7x7 grid. Which shape is closest to the blue 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: blue square at (5, 6)
Distance from target shape to cyan trapezoid at (2, 6): 3
Distance from target shape to pink right_triangle at (2, 2): 7
Distance from target shape to green trapezoid at (2, 5): 4
Distance from target shape to orange right_triangle at (3, 0): 8
Closest shape is the cyan trapezoid at (2, 6) with distance 3</think>

<answer>(2, 6)</answer>