There are 6 shapes on a 10x10 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 (1, 3)
Distance from target shape to yellow right_triangle at (3, 3): 2
Distance from target shape to blue square at (7, 0): 9
Distance from target shape to purple rectangle at (5, 5): 6
Distance from target shape to gray trapezoid at (6, 7): 9
Distance from target shape to orange square at (6, 9): 11
Closest shape is the yellow right_triangle at (3, 3) with distance 2</think>

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