In each of the questions below are given four statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements
Some tractors are buses.
All buses are trains.
Some trains are boats.
All boats are ships.
Conclusions
I. Some boats are buses.
II. Some ships are buses.
III. Some trains are tractors.
IV. Some ships are trains.