In Definite articles^x, Plurals^x, Relative pronouns^x

Tanit wrote: Hi, good question! I was wandering whether a slightly different point of view exists as for the subject of the sentence: He is one that knows the solution to the problem. or He is one of the few that know the solution to the problem. ...

Zj.frank wrote: Dear all: He is one of the few that knows the solution to the problem. or He is one of the few that know the solution to the problem. Do the two "that"s denote different things? Shall we say that the first "that" denotes "he" while the second "that" denotes...