Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_71 (against INTEGER, opposing_teams VARCHAR)
### Question:
What is the largest Against with an Opposing Teams of wales?
### Answer:
SELECT MAX(against) FROM table_name_71 WHERE opposing_teams = "wales"