If corporations are people, how do we determine their gender?

So we can prevent same-sex corporate mergers? Why isn't the GOP doing something about this?

Could we somehow use the name of corporation (John Deer is male, Amazon is female), or base it on their best selling products? But what if the parent company makes both locomotives and bras? We certainly couldn't use the French noun gender as a guide, because well... that would be "French".

Suggestions?