○○○ Ebola ⪢⪢
Ebola is caused by six species of virus with four known to cause sickness in humans and each is named after the locations of their outbreaks. The first known species was Zaire Ebola virus discovered in 1976 near Zaire's Ebola
river.
http://qindex.info/i.php?x=7206
○○○ boatman ⪢⪢
When he reached the
river of death, he asked the _____ to carry him to the other side of the
river. The _____ refused. "Only the dead can pass," he said to Orpheus.
http://qindex.info/i.php?x=24060