Do not rely on the format of "variable called <variable_name>" and "list called <list_name>"

[quachtina96]

ScratchNLP depends on "called" being part of the phrasing in order to recognize it and pull out the appropriate name (to add it to the grammar).

However, it's easy to imagine a user who omits "called"

"make a variable y" "make a variable x and a variable z" "make a list fruits"