What is this and where does it go?
 

First pic is a hose coming from the area near the oil fill cap. Noticed it wasn't connected to anything. What's it supposed to be attached to? 2nd pic. Is something I found just laying loose under the area where that unconnected hose is. Thanks very much. 1991 f150 5.8. 4wd
https://cimg7.ibsrv.net/gimg/www.for...a3f0992f8e.jpg
https://cimg9.ibsrv.net/gimg/www.for...0fb87952a2.jpg
https://cimg1.ibsrv.net/gimg/www.for...13a51ba754.jpg

It looks like it goes to the breather filter in the air cleaner the other end I believe went to the oil fill cap or top of a valve cover.. All part of the positive crankcase ventilation system.

So do I attach these two tubes/hoses together? And then attach the end with the 90 degree angle to ....? (The one end if the fat hose is already attached near/under the oil fill cap. Thanks.