NEED tool to generate logical sentences from keywords that can be used programmatically

Hello, I"ll try not to waste time and be precise. I have searched here and googled (even though didn't get good results cause maybe what I want doesn't have a proper definition) but with no luck.
I've seen desktop tools that lets you generate unique articles from keywords but I can't use them programmatically in my wordpress website.
Lets say my usecase is that I have a picture blog and I post a picture and have already a title for that. And now I need to have under a picture some text (a single paragraph up to many paragraphs). The text should be generated with that tool from keywords that are in title. And I could use that tool in my php code as an API to that service or install it or some other way?
Before I just generated random sentences without any logical meaning under a picture and ofcourse I got quickly deindexed from google. Now If I'd make the text under a picture relevant to the title and that has a meaning that could postpone the deindexing from google for more time

Here's Idea for you:

You can create a template like: <noun> <verb> <adjective>....... etc
and feed to the program along with intended verb, noun.. etc to use
then program will emit a grammatically correct sentence.. that's it.

Along with that you can create N number of templates and choose one of it randomly..

botrockets said:

Here's Idea for you:

You can create a template like: <noun> <verb> <adjective>....... etc
and feed to the program along with intended verb, noun.. etc to use
then program will emit a grammatically correct sentence.. that's it.

Along with that you can create N number of templates and choose one of it randomly..

Click to expand...

Thanks but this seems too much to write natural language processing generation system. Because I have lots of lots of posts that means that the variaion has to be huuuuge. And not just sentences but sometimes also logically built up paragraph(s)
I have found a list with such tools
aclweb 0rg/aclwiki/index.php?title=Downloadable_NLG_systems (sorry can't post URLs yet)
Haven't investigated yet what kind of functionality they offer.