Syllogism – Universal chains plus an unrelated particular: Statements: All pictures are paintings. All paintings are photographs. Some photographs are designs. Conclusions: I) Some paintings are designs. II) Some photographs are movies. Choose the necessarily true conclusion(s).

Introduction / Context:
We must not over-project the particular “Some photographs are designs” onto the subset of photographs that are paintings.

Given Data / Assumptions:

• Pictures ⊆ Paintings ⊆ Photographs.
• ∃ Photographs∩Designs.

Concept / Approach:
The “some photographs are designs” set might lie completely outside the paintings subset of photographs.

Step-by-Step Solution:
C1: “Some paintings are designs” – not forced; the photographed designs may be non-paintings.C2: “Some photographs are movies” – no premise links photographs to movies; unsupported.

Verification / Alternative check:
Build a model where Designs are a photograph subset disjoint from all Paintings. Premises remain true; C1 fails. C2 lacks any support in any model.

Why Other Options Are Wrong:
Any option asserting I, II, or both follow is contradicted by the countermodel.

Common Pitfalls:
Assuming that a property of a superset (Photographs) must hold for a specific subset (Paintings).

Final Answer:
Neither Conclusion I nor II follows.