( ( If ( ( both parents ) ( have ( brown eyes ) ) ) ) ( , ( ( ( can ( an offspring ) ) ( have ( blue eyes ) ) ) ? ) ) )
(ROOT (SQ (SBAR (IN If) (S (NP (DT both) (NNS parents)) (VP (VBP have) (NP (JJ brown) (NNS eyes))))) (, ,) (MD can) (NP (DT an) (NN offspring)) (VP (VB have) (NP (JJ blue) (NNS eyes))) (. ?)))
If both parents have brown eyes, can an offspring have blue eyes?
(ROOT (S (NP (DT A) (JJ human) (NN offspring)) (VP (VBP inherit) (NP (JJ blue) (NNS eyes))) (. .)))