There are 4 shapes on a 10x10 grid. Which shape is closest to the blue square 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 square at (2, 7)
Distance from target shape to red trapezoid at (1, 9): 3
Distance from target shape to orange rectangle at (5, 5): 5
Distance from target shape to yellow trapezoid at (6, 1): 10
Closest shape is the red trapezoid at (1, 9) with distance 3</think>

<answer>(1, 9)</answer>