Venn diagrams of “Some particlesare glasses”:
It implies that
(i) Some particles are glasses.
(ii) Some particles are not glasses.
Therefore, Conclusion I does not follow.
It implies that : All particles are glasses.
It implies that : All glasses are particles.
Venn diagrams of “Some sands are particles”:
or
After combining the diagrams III and VI, we get
Therefore, some glasses beings and s is a possibility.
Thus, Conclusion II follows.