user: Question: What is the total number of goals on the debut date of 14-04-1907?
Columns: ['number', 'date of debut', 'name', 'date of birth', 'number of caps', 'number of goals', 'date of death†']
Types: ['real', 'text', 'text', 'text', 'real', 'real', 'text']
Sample row: [1.0, '30-04-1905', 'Reinier Beeuwkes', '17-02-1884', 19.0, 0.0, '01-04-1963']
SQL:

assistant: SELECT SUM("number of goals") FROM "Table" WHERE "date of debut" = '14-04-1907';