Do you know what a teja is?
( ( ( Do you ) ( know ( what ( ( a teja ) is ) ) ) ) ? )
(ROOT (SQ (VBP Do) (NP (PRP you)) (VP (VB know) (SBAR (WHNP (WP what)) (S (NP (DT a) (NN teja)) (VP (VBZ is))))) (. ?)))
They all knew what a teja was.
( They ( all ( ( knew ( what ( ( a teja ) was ) ) ) . ) ) )
(ROOT (S (NP (PRP They)) (ADVP (DT all)) (VP (VBD knew) (SBAR (WHNP (WP what)) (S (NP (DT a) (NN teja)) (VP (VBD was))))) (. .)))