input: 
  from typing import List, Tuple, Any
  
  def generate_html_table(table_name: str, genre: str) -> str:
      """ Generate an HTML table displaying the top 10 bestselling books in a specific genre.
      >>> generate_html_table('Books', 'Fantasy') == '<table><tr><th>Title</th><th>Author</th><th>Genre</th><th>Sales</th></tr><tr><td>Book1</td><td>Author1</td><td>Fantasy</td><td>100000</td></tr><tr><td>Book2</td><td>Author2</td><td>Fantasy</td><td>90000</td></tr><tr><td>Book3</td><td>Author3</td><td>Fantasy</td><td>80000</td></tr><tr><td>Book4</td><td>Author4</td><td>Fantasy</td><td>70000</td></tr><tr><td>Book5</td><td>Author5</td><td>Fantasy</td><td>60000</td></tr><tr><td>Book6</td><td>Author6</td><td>Fantasy</td><td>50000</td></tr><tr><td>Book7</td><td>Author7</td><td>Fantasy</td><td>40000</td></tr><tr><td>Book8</td><td>Author8</td><td>Fantasy</td><td>30000</td></tr><tr><td>Book9</td><td>Author9</td><td>Fantasy</td><td>20000</td></tr><tr><td>Book10</td><td>Author10</td><td>Fantasy</td><td>10000</td></tr></table>'
      True
      """
  
output:     html = f'<table><tr><th>Title</th><th>Author</th><th>Genre</th><th>Sales</th></tr>'
      for i in range(1, 11):
          html += f'<tr><td>Book{i}</td><td>Author{i}</td><td>{genre}</td><td>{110000 - i * 10000}</td></tr>'
      html += '</table>'
      return html