There are 4 shapes on a 4x4 grid. Which shape is closest to the cyan trapezoid 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 trapezoid at (3, 3)
Distance from target shape to blue square at (0, 1): 5
Distance from target shape to pink right_triangle at (0, 0): 6
Distance from target shape to gray right_triangle at (0, 3): 3
Closest shape is the gray right_triangle at (0, 3) with distance 3</think>

<answer>(0, 3)</answer>