Found:
Non-argument
SYNTAX: an NP in A-position, which is not a referential expression and is not assigned a theta-role. EXAMPLE: existential there in (i) and expletive it in (ii) are non-arguments.
(i) There is a man in the garden (ii) It is certain that John will winIdiom chunks such as too much in too much has been made of this problem are also considered non-arguments.
| LIT. | Chomsky, N. (1981) |