text: // Validate person name
  
  'use strict';
  
  const isValid = name => {
    if (typeof name !== 'string') return false;
    const regex = /^[a-zA-Z]+ [a-zA-Z]+$/;
    return regex.test(name);
  };
  
  // Usage
  
  const result = isValid('Marcus Aurelius');
  console.log(result);
  