(S (S (S (BASENP (PRP It)) (VP (VP (VBZ is) (ADJP (JJ unclear))) (SBAR (WHADVP (WRB how)) (S (BASENP (DT the) (JJ head-to-head) (NN rule)) (VP (MD will) (VP (VB be) (VP (VP (VBN applied) (PP (IN by) (BASENP (DT the) (NNP AFC)))) (PP (IN in) (BASENP (DT this) (NN situation)))))))))) (CONJP (COMMA ,) (CC and)) (S (BASENP (PRP it)) (VP (VP (VBZ is) (ADJP (JJ probable))) (SBAR (IN that) (S (BASENP (NN goal) (NN difference)) (VP (MD will) (VP (VB be) (VP (VBN used))))))))) (PERIOD .))