football and baseball and
( ( ( football and ) baseball ) and )
(ROOT (NP (NP (NN football) (CC and) (NN baseball)) (NP (NNP and))))
Football and baseball were both popular.
( ( ( Football and ) baseball ) ( ( were ( both popular ) ) . ) )
(ROOT (S (NP (NN Football) (CC and) (NN baseball)) (VP (VBD were) (ADJP (DT both) (JJ popular))) (. .)))