that if the stentor does not fly the railroad is not Scandinavian and it is not unfashionable is not incorrect.
sent1: if the stentor is not a fly then the railroad is not unfashionable. sent2: something is not unfashionable and it is not a fly if it is not a vampire. sent3: the railroad is not Scandinavian and it is not a fly if the stentor is a vampire. sent4: the railroad is not Scandinavian if the Savoyard is a vampire or a Scandinavian or both. sent5: the stentor does shop anthurium and/or it is not non-gustatory. sent6: the fact that the railroad is not unfashionable is not false if the stentor does fly. sent7: if either the Savoyard is unfashionable or it is Scandinavian or both then the fact that the railroad is not Scandinavian is correct. sent8: if the stentor is a fly the railroad is not Scandinavian and it is not unfashionable. sent9: if the railroad is unfashionable and/or it is a vampire the Savoyard is not a vampire. sent10: the Savoyard is not unfashionable if the railroad is a Scandinavian. sent11: the railroad is not a Scandinavian if the stentor is a Scandinavian. sent12: if the Savoyard is Scandinavian the railroad is not a Scandinavian.
void -> assump1: Let's assume that the stentor does not fly.; sent1 & assump1 -> int1: the railroad is not unfashionable.;
the heartwood is not a kind of a Scandinavian.
sent2 -> int2: the stentor is both not unfashionable and not a fly if it is not a vampire.;
$hypothesis$ = that if the stentor does not fly the railroad is not Scandinavian and it is not unfashionable is not incorrect. ; $context$ = sent1: if the stentor is not a fly then the railroad is not unfashionable. sent2: something is not unfashionable and it is not a fly if it is not a vampire. sent3: the railroad is not Scandinavian and it is not a fly if the stentor is a vampire. sent4: the railroad is not Scandinavian if the Savoyard is a vampire or a Scandinavian or both. sent5: the stentor does shop anthurium and/or it is not non-gustatory. sent6: the fact that the railroad is not unfashionable is not false if the stentor does fly. sent7: if either the Savoyard is unfashionable or it is Scandinavian or both then the fact that the railroad is not Scandinavian is correct. sent8: if the stentor is a fly the railroad is not Scandinavian and it is not unfashionable. sent9: if the railroad is unfashionable and/or it is a vampire the Savoyard is not a vampire. sent10: the Savoyard is not unfashionable if the railroad is a Scandinavian. sent11: the railroad is not a Scandinavian if the stentor is a Scandinavian. sent12: if the Savoyard is Scandinavian the railroad is not a Scandinavian. ; $proof$ = 
void -> assump1: Let's assume that the stentor does not fly.; sent1 & assump1 -> int1: the railroad is not unfashionable.; __UNKNOWN__