How to quickly and easily determine if you are investing in a Corporation or a Limited Partnership
To determine whether a property in which you've invested will generate a T5 or T5013, you must first determine the type of security in which you are investing: Corporate shares or Limited Partnership Units (LP Units).
The easiest way to determine this is to check the Offering Documents.
In this example, the investor is being offered corporate shares, as such, the investment is not a partnership for tax purposes and will receive a T5. 
In the next example, LP Units in the form of Class A LP Units are being offered. As such, this investment is a partnership for tax purposes and will receive a T5013. 
Please keep in mind that T5s and T5013s are not automatically generated for each property. Only properties that pay our dividends are required to provide T5 or T5013, and even then, certain types of payouts do not come with a T5 or T5013. See here for more information on T5s and T5013s.