off the slight meaning words at sentence end. After then, this sentence end is minor transformation. Change verbal noun Cut off 「なる(naru:to become)」 Cut off the part after 「明らかに (akirakani:obvious)」 Change words of Japanese origin
is made to cut off 「する(suru:do)」. And verbal noun work as verb before cutting off 「する」. We cut off the part which following 「する」. If the sentence does not have the correct interpretation, the particle is changed to be correct.
error at the common nouns, that are wrongly treated as verbal nouns. Japanese verbal nouns are special in the sense that they are used as nouns as well as verbs. But common noun never work as verb.
end, we try to change many parts of sentence end, by considering the sentence meaning. But, machine can not summarize it with such a consideration. This difference appears at the number of reduced characters in the experiment.