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 (3, 1)
Distance from target shape to gray right_triangle at (5, 6): 7
Distance from target shape to pink square at (5, 3): 4
Distance from target shape to green trapezoid at (0, 1): 3
Distance from target shape to brown trapezoid at (2, 1): 1
Distance from target shape to orange right_triangle at (3, 0): 1
Closest shape is the brown trapezoid at (2, 1) with distance 1</think>

<answer>(2, 1)</answer>