input: Write a python function to generate a summary of a given text and verify its output.
  assert generate_summary(["The world is in a state of crisis.", "Social media and technology have taken over our lives, and it has caused serious harm to our mental health and wellbeing.", "We have become isolated and more disconnected from other people and nature.", "It’s time to take a break and reconnect with the real world."]) == "It's time to take a break and reconnect with the real world. Social media and technology have taken over our lives, causing serious harm to our mental health and wellbeing. We have become isolated and more disconnected from other people and nature."
  assert generate_summary(["The quick brown fox jumps over the lazy dog.", "A journey of a thousand miles begins with a single step.", "To be or not to be, that is the question.", "All that glitters is not gold."]) == "The quick brown fox jumps over the lazy dog. A journey of a thousand miles begins with a single step. To be or not to be, that is the question."
output: def generate_summary(text):
      if not text:
          return ""
      summary = text[-1]
      summary += " " + text[1] if len(text) > 1 else ""
      summary += " " + text[2] if len(text) > 2 else ""
      return summary