echo '( graphviz ( quote ( S she ( VP1 wanted ( NP1 ( NP2 the dress ) ( P on ( NP3 that rack ) ) ) ) ) nil ) nil ) ' | ./mylisp3 | egrep -v '^[(]' | dot -Tpng > dress1.png
echo '( graphviz ( quote ( S she ( VP1 ( VP2 wanted ( NP2 the dress ) ) ( P on ( NP3 that rack ) ) ) ) nil ) nil ) ' | ./mylisp3 | egrep -v '^[(]' | dot -Tpng > dress2.png