user: Question: How many previous years did Maebashi Ikuei high school have a total number of 1 participation?
Columns: ['Prefecture', 'City/Town', 'High School Name', 'Year of Previous Participation', 'Total Number of Participation']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Hokkaido', 'Obihiro', 'Obihiro Otani', 'N/A', 1.0]
SQL:

assistant: SELECT COUNT("Year of Previous Participation") FROM "Table" WHERE "Total Number of Participation" = 1.0 AND "High School Name" = 'Maebashi Ikuei';