Some - ANSWER at least one, possibly all
at least some - ANSWER some
a few - ANSWER some
a number - ANSWER some
several - ANSWER some
part of - ANSWER some
a portion - ANSWER some
many - ANSWER some
Single Arrow (--->) - ANSWER Introduced by sufficient and necessary words like
if...then, when, all, every, and only
Double Arrow (<--->) - ANSWER Introduced by "if and only if"
Double-Not Arrow (<--|-->) - ANSWER Introduced by conditional statements
where exactly one of the terms is negative or by terms implying that the two cannot
go together
Symbolizing relationships with "some" - ANSWER <--S-->