Object types¶
Varying the object type and investigation what happens to the properties. Relevant properties are
{
    "@context": "https://www.w3.org/ns/activitystreams",
    "type": "${type}",
    "name": "name",
    "summary": "summary",
    "content": "content"
}
where type is the property being varied between different entries in the
table. Object types are defined in 
https://www.w3.org/TR/activitystreams-vocabulary/#object-types.