How to get sub items from an array in Liquid?

gistfile1.txt

JSON:

case studies: [
  [ "Nubaru",
    ["Nubaru Yearly Report", "Web design", "2013", "/case-studies/Nubaru.html", "/images/case-studies/Nubaru.png"]
  ],
  [ "Ekande",
    ["Ekande application", "Web application design", "2013", "/case-studies/Ekande.html", "/images/case-studies/Ekande.png"]
  ]
]

Jekyll HTML:

<ul>
{% for items in page.case-studies %}
  {% for item in items %}
    <li>
      {{ item }}
      <!-- How to get sub items? -->
    </li>
  {% endfor %}
{% endfor %}
</ul>

You can access sub-items as you would in a programming language: via square brackets and array indices:

{{ item[0] }}

However, for your use-case it might be more maintanable for each case study to be a hash; then you would iterate an array of hashes. See my fork. I've used YAML syntax but it should allow you to some degree to paste in JSON as well.