The term "summarily hanged" denotes the immediate execution of the order or punishment. This means there is no delay in the carrying out of the order.
When the statement reads <em>"any civilian caught interfering with the railroad . . . will be summarily hanged; the penalty will be carried out immediately."</em> The immediate effect of the punishment without any delay in its execution is in correspondence with the phrase "summarily hanged".
To judge whether or not a conclusion is successful, simply look back in the story and try to relate things in the story with the conclusion. Depending on what you find will determine whether or not the conclusion is successful.
