Text: yeah but uh you know  it's uh i guess the difficulty would be to  somebody could obviously just take it right off the tailpipe again so you'd probably have to build it right into the muffler or something
Entailment: If you take it right off the tailpipe you'd have to build it into the muffler.
Contradiction: If the tailpipe is taken off then don't try to fix it at all, especially not into the muffler.