There are 6 shapes on a 6x6 grid. Which shape is closest to the red right_triangle 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 right_triangle at (1, 0)
Distance from target shape to pink square at (5, 2): 6
Distance from target shape to green rectangle at (0, 5): 6
Distance from target shape to orange trapezoid at (2, 0): 1
Distance from target shape to yellow right_triangle at (5, 1): 5
Distance from target shape to brown right_triangle at (1, 4): 4
Closest shape is the orange trapezoid at (2, 0) with distance 1</think>

<answer>(2, 0)</answer>