With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Penny Dreadful had episodes.
text_B: The Honda R engine is an inline-four engine launched in 2006 for the Honda Civic -LRB- Non-Si -RRB- .. inline-four engine. inline-four engine. Honda Civic. Honda Civic. It is fuel injected , has an aluminum-alloy cylinder block and cylinder head , is a SOHC 16-valve design -LRB- four valves per cylinder -RRB- and utilizes Honda 's i-VTEC system .. fuel injected. fuel injected. alloy. alloy. cylinder block. cylinder block. cylinder head. cylinder head. SOHC. SOHC. valve. poppet valve. i-VTEC. i-VTEC. The R series engine has a compression ratio of 10.5 :1 , features a `` drive by wire '' throttle system which is computer controlled to reduce pumping losses and create a smooth torque curve .. compression ratio. compression ratio. drive by wire. Electronic throttle control. pumping losses. Engine efficiency#Friction. The engine uses many advanced technologies to improve fuel economy and reduce friction .. Piston rings are given an ion plating and weight is reduced with plastic and aluminum parts and variable length intake manifolds that maintain ram air at a wide RPM range .. The engine also features piston cooling jets , previously available only on high performance engines , and in the ninth generation 1.8 L Civic -LRB- 2012 and newer -RRB- the pistons are treated with molybdenum disulfide applied in a polka-dot pattern .. molybdenum disulfide. molybdenum disulfide. The automatic transmission model is rated at California Air Resources Board -LRB- CARB -RRB- ULEV-2 -LRB- Ultra Low Emissions Vehicle -RRB- with fuel economy 25 mpgus city , and 36 mpgus highway .. California Air Resources Board. California Air Resources Board. It also uses the same computer -LRB- engine control unit -RRB- controlled distributorless coil-on-plug ignition as the Honda K-series engines .. engine control unit. engine control unit. distributorless. Direct Ignition#Direct & Distributorless ignition. ignition. ignition system. K-series. Honda K engine
not_related.