There are 6 shapes on a 5x5 grid. Which shape is closest to the blue 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: blue trapezoid at (0, 3)
Distance from target shape to yellow square at (1, 3): 1
Distance from target shape to gray square at (3, 4): 4
Distance from target shape to pink trapezoid at (0, 1): 2
Distance from target shape to cyan trapezoid at (2, 2): 3
Distance from target shape to brown square at (2, 4): 3
Closest shape is the yellow square at (1, 3) with distance 1</think>

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