input: Write a function to generate sample data for a web application using Python's faker library. The function should output three columns of data: name, email, and age. The age should be randomly generated between 18 and 60.
  assert generate_sample_data('English')==None
  assert generate_sample_data('German')==None
output: def generate_sample_data(locale):
      from faker import Faker
      import random
      fake = Faker(locale)
      data = []
      for _ in range(10):
          name = fake.name()
          email = fake.email()
          age = random.randint(18, 60)
          data.append([name, email, age])
      return data