{% assign imagemetas = site.imagemeta | where_exp: "image", "image.tags contains include.topic" -%}
{% for image in imagemetas %}
{% if image.thumburl %}
{% else %}
{% endif %}
{% if image.author %}
{{image.description}} ({{image.license}} {{image.author}})
{% else %}
{{image.description}}
{% endif %}
{% endfor %}