Why exactly the <e1>physicist</e1> came up with the <e2>term</e2> "black hole" I'm not sure of, but you might be able to find out in his autobiography.
Why exactly the physicist
Why exactly the physicist came up with the term "black hole" I'm not sure of, but you might be able to find out in his autobiography.
<triplet> physicist <subject> term <object> Product-Producer(e2,e1)