yep because it's when it's self propelled it's heavy yeah
( yep ( because ( it ( 's ( when ( ( ( it 's ) self ) ( propelled ( it ( 's ( heavy yeah ) ) ) ) ) ) ) ) ) )
(ROOT (S (VP (VB yep) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ 's) (SBAR (WHADVP (WRB when)) (S (NP (NP (PRP it) (POS 's)) (NN self)) (VP (VBD propelled) (SBAR (S (NP (PRP it)) (VP (VBZ 's) (NP (JJ heavy) (NN yeah))))))))))))))
it's heavy when it's self propelled, in case you were wondering
( it ( ( 's heavy ) ( when ( ( ( it 's ) self ) ( ( propelled , ) ( ( in case ) ( you ( were wondering ) ) ) ) ) ) ) )
(ROOT (S (NP (PRP it)) (VP (VBZ 's) (ADJP (JJ heavy)) (SBAR (WHADVP (WRB when)) (S (NP (NP (PRP it) (POS 's)) (NN self)) (VP (VBD propelled) (, ,) (SBAR (IN in) (NN case) (S (NP (PRP you)) (VP (VBD were) (VP (VBG wondering)))))))))))