Denshi Jisho — Online Japanese dictionary

Found 3 sentences.

には事実虚構区別がつかない。 He can't tell fact from fiction.
事実虚構見分けなければならない You have to distinguish fact from fiction.
ボブ酷く取り乱していて現実虚構区別んど出来なかった Bob was so beside himself that he could scarcely tell fact from fiction.