http://schema.org/ReplyAction
http://schema.org/Answer

Original issue: I was looking at the lint errors outlined in issue #53. At some point in the proposal process, ReplyAction had an "answer" property, which was removed prior to official adoption. It would be useful to link ReplyAction to schema.org/Answer in some way, so the body of the reply can be modeled.

Consider also #183 re RsvpAction

Notes:

when the Question + Answer vocab was modeled we originally made an 'answer' property to point to answer. Later it became 'http://schema.org/suggestedAnswer' which was a superproperty of the more specific http://schema.org/acceptedAnswer. Meanwhile the q/a-related action types AskAction, ReplyAction have an example (which uses AskAction but is catalogued against the ReplyAction type in data/examples.txt) which uses simple textual values (rather than e.g. 'text' property of an Answer or Question). This all needs some cleaning.