There are 5 shapes on a 8x8 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 (3, 4)
Distance from target shape to cyan square at (0, 3): 4
Distance from target shape to orange right_triangle at (3, 6): 2
Distance from target shape to yellow trapezoid at (3, 5): 1
Distance from target shape to green right_triangle at (2, 6): 3
Closest shape is the yellow trapezoid at (3, 5) with distance 1</think>

<answer>(3, 5)</answer>