There are 6 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 (4, 3)
Distance from target shape to orange right_triangle at (1, 3): 3
Distance from target shape to gray rectangle at (1, 2): 4
Distance from target shape to pink right_triangle at (0, 5): 6
Distance from target shape to blue right_triangle at (1, 5): 5
Distance from target shape to brown trapezoid at (3, 5): 3
Closest shape is the orange right_triangle at (1, 3) with distance 3</think>

<answer>(1, 3)</answer>