[
  {
    "file": "Hello.java",
    "matches": [
      { "match": "public class Hello // prints a Hello World! greeting" }
    ]
  },
  {
    "file": "Hello.pdf",
    "matches": [
      { "match": "(Hello)" }
    ]
  },
  {
    "file": "Hello.txt",
    "matches": [
      { "match": "Hello" }
    ]
  }
]