Complex sentence: The club finished in 11th place in the principal competition and 1st in the subsidiary competition, which led to their appearance in the Lancashire Senior Cup in which they lost to Liverpool at the semi-final (or first) stage by a single goal at Bloomfield Road.
Split into simpler sentences: The club finished in 11th place in the principal competition and first in the subsidiary competition, which led to their appearance in the Lancashire Senior Cup. They lost to Liverpool at the semi-final (or first) stage by a single goal at Bloomfield Road.