user: Question: Which Comparative has a Link of sourcecode webserver?
Columns: ['Name', 'Species Specific', 'Intra-molecular structure', 'Comparative', 'Link']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Diana-microT', 'human, mouse', 'no', 'yes', 'webserver']
SQL:

assistant: SELECT "Comparative" FROM "Table" WHERE "Link" = 'sourcecode webserver';