user: Question: Who is the rookie goalkeeper Rob Scherr who played before week 6?
Columns: ['Month', 'Week', 'Offensive', 'Defensive', 'Goalkeeper', 'Rookie']
Types: ['text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['May', 1.0, 'Jeff Zywicki', 'Geoff Snider', 'Mike Gabel', 'N/A']
SQL:

assistant: SELECT "Rookie" FROM "Table" WHERE "Goalkeeper" = 'Rob Scherr' AND "Week" < 6.0;