Whether of in an English nominal group is used as a preposition or a selector can be recognized by the relationship between the referents it includes;the introduction of the term "selected from" can help to define the head of the nominal groups containing selection.

Not only the means and the co-efficients of variations for the candidates characters were similar to those for the entire col-lection, the ranges of 13 variables among 14 ones in the selection was as large as those of the variables in the entire colleciton, except the range for seed protein cont.