user: Question: Who was the runner up the season that Sagawa Express came in fourth?
Columns: ['Season', 'Winner', 'Runner-up', 'Third place', 'Fourth place']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1999.0, 'Yokohama FC', 'Honda Motor', 'Mito HollyHock ↑', 'Denso S.C.']
SQL:

assistant: SELECT "Runner-up" FROM "Table" WHERE "Fourth place" = 'Sagawa Express';