There are 5 shapes on a 4x4 grid. Which shape is closest to the red 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: red trapezoid at (0, 2)
Distance from target shape to cyan right_triangle at (1, 3): 2
Distance from target shape to brown square at (2, 0): 4
Distance from target shape to yellow right_triangle at (2, 2): 2
Distance from target shape to gray trapezoid at (3, 2): 3
Closest shape is the cyan right_triangle at (1, 3) with distance 2</think>

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