Complex sentence: The team finished runners-up in the Calcutta Football League, a dismal eighth in the I-League, were the semi finalists of the Federation Cup and bowed out in the group stage of the IFA Shield.
Split into simpler sentences: The team finished runners-up in the Calcutta Football League and a dismal eighth in the I-League. They were the semi finalists of the Federation Cup and bowed out in the group stage of the IFA Shield.