(j3.2006) Construct entities

[Van Snyder]

In

  block
    use A, only: B
  end block

Is B a construct entity of the BLOCK construct?  I.e., is the use
statement an "explicit declaration" as required in 19.4p1?

In

  block
    common /A/ B
  end block

Is B a construct entity?  I.e., is the common statement with an
implicitly-typed variable an "explicit declaration" as required in
19.4p1?