Some Platforms are Trains (I) + No Train is a Ticket (E) → Some Platforms are not Tickets (O). Hence conclusion I follows. No Train is a Ticket (E) + Some Tickets are Passengers (I) → Some Passengers are not Trains (O*). Hence conclusion II follows. Some Platforms are not Tickets (O) + Some Tickets are Passengers (I) → No conclusion. Hence conclusion III does not follow.
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