Translation of a complex sentence

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I have been having a very hard time translating the following sentence from natural language to first-order predicate logic. Can someone help me, please? The sentence is:

If someone performs an act and his act causes damage to another, if the act is blameworthy and there is no justification for it (the act), the person who performed the act will have an obligation to pay damages to the other.

It might be my limited knowledge of how to use predicate logic, but I have no idea how to even start.

Thanks

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Using:

$P(x)$: $x$ is a person

$P(x)$: $x$ is an act

$P(x,y)$: $x$ performs $y$

$D(x,y)$: $x$ does damage to $y$

$B(x)$: $x$ is blameworthy

$J(x)$: $x$ is justifiable

$O(x,y)$: $x$ is obligated to pay damages to $y$

you get:

$$\forall x \forall y (P(x) \land P(y) \land \exists z (A(z) \land P(x,z) \land D(z,y) \land B(z) \land \neg J(z))) \to O(x,y))$$

One would of course like to break down $O(x,y)$ a little more ... but in order to do that, we'd need to go into modal logic, which is outside the scope of this exercise.