You are given three grids, where each of them is 5 by 5 in size.
Grids have empty cells marked with "▢" and filled cells marked with "X".
You are also given a referring expression that describes one of the given grids.
Your task is to select the grid that matches the given referring expression.
Generate only the number (in text) of the grid that matches the given expression by selecting first, second, or third.

First:

▢ ▢ X ▢ ▢
▢ ▢ X ▢ ▢
X X X X X
▢ ▢ X ▢ ▢
▢ ▢ X ▢ ▢

Second:

▢ ▢ X ▢ ▢
▢ X X X ▢
X X X X X
▢ ▢ X ▢ ▢
▢ ▢ X ▢ ▢

Third:

▢ ▢ X ▢ ▢
▢ X X ▢ ▢
X X X X X
▢ X X ▢ ▢
▢ ▢ X ▢ ▢

Expression: The target grid has an X in the middle row, third column, and an L-shaped arrangement of X's in the top left corner, bottom left corner, and top right corner, with the bottom right corner being empty.
Question: Which grid does the expression refer to?
Start with the tag "Answer: ", followed by your selection. Omit any other text.

Answer: First

The expression describes the first grid because it has an X in the middle row, third column, and an L-shaped arrangement of X's in the top left corner, bottom left corner, and top right corner. The bottom right corner is empty in the first grid, which matches the description.
assistant
Answer: First

The expression describes the first grid because it has an X in the middle row, third column, and an L-shaped arrangement of X's in the top left corner, bottom left corner, and top right corner. The bottom right corner is empty in the first grid, which matches the description.
assistant