user: Question: How many authors or editors are there for the book title Elf Child?
Columns: ['Year', 'Author(s) or Editor(s)', 'Book Title', 'Publisher', 'Category', 'Result']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1989.0, 'Michael Nava', 'Goldenboy', 'Alyson', 'Gay M/SF', 'Won [A ]']
SQL:

assistant: SELECT COUNT("Author(s) or Editor(s)") FROM "Table" WHERE "Book Title" = 'Elf Child';