text: var BasicCard = require('./basicCard.js');
  var ClozeCard = require('./clozeCard.js');
  
  var firstPresident = new BasicCard(
      "Who was the first president of the United States?", "George Washington");
  
  // "Who was the first president of the United States?"
  console.log(firstPresident.front); 
  
  // "George Washington"
  console.log(firstPresident.back); 
  
  var firstPresidentCloze = new ClozeCard(
      "George Washington was the first president of the United States.", "George Washington");
  
  // "George Washington"
  console.log(firstPresidentCloze.cloze); 
  
  // " ... was the first president of the United States.
  console.log(firstPresidentCloze.partial);
  
  // "George Washington was the first president of the United States.
  console.log(firstPresidentCloze.fullText);
  
  // Should throw or log an error because "oops" doesn't appear in "This doesn't work"
  var brokenCloze = new ClozeCard("This doesn't work", "oops");
  console.log(brokenCloze.partial);