Best way to store paragraphs with in-text pointer to table

I am creating a pretty hefty tool with a quite large database to store a lot of text information. I want a good way to store paragraphs with pointers to data (that may be should be separated from the text) in the middle of sentences. Example:

The plane will be 15m long, 20m wide with four toilets. All toilets should have 20L capacity and be operated by a 15cm handle.

These specifications such as 15m length, 20m width should be stored separately, as there must be possibilities of changing the "formulations", while not having to change the specifications such as:

Planes will be equipped with four toilets, with 20L capacity and 15cm handles. This plane is 15m long and 20m wide.

Anyone dealt with this?

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