Problem: Text: Final products contain 20% propylene glycol, 1.5% of dipropylene glycol and small amounts of other polypropylene glycols. Further purification produces finished industrial grade or USP/JP/EP/BP grade propylene glycol that is typically 99.5% or greater. Propylene glycol can also be converted from glycerol, a biodiesel byproduct. This starting material is usually reserved for industrial use because of the noticeable odor and taste that accompanies the final product.

Question: is polypropylene glycol the same as propylene glycol?
A: no

Problem: Text: In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NO) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. This dilutes the O in the incoming air stream and provides gases inert to combustion to act as absorbents of combustion heat to reduce peak in-cylinder temperatures. NO is produced in a narrow band of high cylinder temperatures and pressures. Another primary benefit of external EGR valves on a spark ignition engine is an increase in efficiency, as charge dilution allows a larger throttle position and reduces associated pumping losses.

Question: is the egr valve part of the engine?
A: yes

Problem: Text: Barney & Friends is an American children's television series aimed at children from ages 1 to 8, created by Sheryl Leach and produced by HIT Entertainment. It premiered on PBS on April 6, 1992. The series features the title character Barney, a purple anthropomorphic Tyrannosaurus rex who conveys educational messages through songs and small dance routines with a friendly, optimistic attitude. Production of new episodes originally ceased on September 18, 2009, although reruns of the series were still shown on many PBS stations in the following years. Reruns aired for 10 years on Sprout from 2005 until 2015. In 2015, it was announced that the show was going to be revived. However, nothing else has been announced since then. It was scheduled to premiere in 2017, but now it has been pushed backed to an unknown date.

Question: is barney the purple dinosaur still on tv?
A:
no