Ah, here is a very interesting piece of logic. I give the general form of the argument first, and then three straightforward applications of the general form.

All A's are/have F;

Therefore, some A is/has F.Thank you to say whether you think all these arguments are valid, or only some, or none.All angels have wings;

Therefore, some angel has wings.

All politicians are liars;

Therefore, some politician is a liar.

All imaginary beings have serious existential problems;

Therefore, some imaginary being has serious existential problems.

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EB