Among the participants in the First World War, should Germany bear the sole responsibility for the outbreak of the war?

After the First World War (WWI), the Paris Peace Conference was held to draft and sign peace treaties with defeated countries. Germany was forced to sign the Treaty of Versailles. The Article 231 of the Treaty of Versailles stated that "the Allied and Association Governments affirm and Germany accepts the responsibility of Germany and her allies for causing all the loss and damage to which the Allied and Associated Governments and their nations have been subjected as a consequency of the war imposed upon them by the aggression of Germany and her allies". Some might say that Germany should bear the sole responsibility for the outbreak of the war while the others might say that it was not Germany's sole responsibility. I disagree that Germany should bear the sole responsibility for the outbreak of war although we cannot deny that she had to share part of the responsibilities.