uh hi you mentioned model railroading that uh i've been watching a program on the Public Broadcasting Station here uh about model railroading have you ever seen that
I have never watched a program about the topic of model railroading. 
mnli hypothesis: I have never watched a program about the topic of model railroading.  premise: uh hi you mentioned model railroading that uh i've been watching a program on the Public Broadcasting Station here uh about model railroading have you ever seen that