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 ▢ X

Second:

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

Third:

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

Expression: The grid has a filled cell in the top right corner, two filled cells in the second row, three filled cells in the third row, two filled cells in the fourth row, and three filled cells in the bottom row, forming a distinct pattern that distinguishes it from the other two grids.
Question: Which grid does the expression refer to?
Start with the tag "Answer: ", followed by your selection. Omit any other text.

Answer: Third
assistant
Answer: Third
assistant