input: 
  from typing import List, Dict
  
  def generate_employee_table(employees: List[Dict[str, str]]) -> str:
      """ Generate an HTML page containing a table with the provided employee data.
      Each employee dictionary should have keys 'Name', 'Job Title', 'Department', and 'Salary'.
      >>> generate_employee_table([{'Name': 'John Doe', 'Job Title': 'Senior Developer', 'Department': 'IT', 'Salary': '$120,000'}, 
      ...                          {'Name': 'Jane Doe', 'Job Title': 'Manager', 'Department': 'Finance', 'Salary': '$95,000'}, 
      ...                          {'Name': 'Tim Smith', 'Job Title': 'Junior Developer', 'Department': 'IT', 'Salary': '$55,000'}])
      '<html> <head> <title>Employee Data</title> </head> <body> <table> <thead> <tr> <th>Name</th> <th>Job Title</th> <th>Department</th> <th>Salary</th> </tr> </thead> <tbody> <tr> <td>John Doe</td> <td>Senior Developer</td> <td>IT</td> <td>$120,000</td> </tr> <tr> <td>Jane Doe</td> <td>Manager</td> <td>Finance</td> <td>$95,000</td> </tr> <tr> <td>Tim Smith</td> <td>Junior Developer</td> <td>IT</td> <td>$55,000</td> </tr> </tbody> </table> </body> </html>'
      """
  
output:     html = "<html> <head> <title>Employee Data</title> </head> <body> <table> <thead> <tr> <th>Name</th> <th>Job Title</th> <th>Department</th> <th>Salary</th> </tr> </thead> <tbody>"
      for employee in employees:
          html += f"<tr> <td>{employee['Name']}</td> <td>{employee['Job Title']}</td> <td>{employee['Department']}</td> <td>{employee['Salary']}</td> </tr>"
      html += "</tbody> </table> </body> </html>"
      return html