English statements to first order logic?

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I kind of understand what I need to do. However, it is the exact syntax that I am struggling with.

For the first answer,

$$C = \{ (a,x)|a,x \in M \land a \text{ is a child of } x \} \land W/L = \{x \in W \land x \notin L\}$$

I feel like I am on the right track, just whatever I am doing needs to be cleaned up a bit.

Thanks,


Solution 1:

For the first answer, I'd write

$$\forall x,(C(a,x)\land W(x)) \implies \lnot L(x).$$

(read: if $x$ is the female parent of $a$, $x$ is not alive)