Assertion: valve engine | /r/HasAspect | four 2 inlet and 2 exhaust
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Source sentences:
text: An OHC or DOHC cylinder head will have at least two valves per cylinder (1 inlet and 1 exhaust), but multi-valve engines may have three (2 inlet and 1 exhaust), or four (2 inlet and 2 exhaust), or even five (3 inlet and 2 exhaust).