user: Question: Which Skip did Marju Velga lead?
Columns: ['Nation', 'Skip', 'Third', 'Second', 'Lead']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Estonia', 'Kristiine Lill', 'Ööle Janson', 'Katrin Kuusk', 'Marju Velga']
SQL:

assistant: SELECT "Skip" FROM "Table" WHERE "Lead" = 'Marju Velga';