Found:

Source

SEMANTICS: one of the possible thematic roles of a verb, indicating the place or object where the movement expressed by the verb starts. EXAMPLE: in John received a book from Mary Mary is the source of the movement of the book (the theme) to John (the goal).

LIT.	Fillmore, C.J. (1968) Gruber, J. (1965) Jackendoff, R. (1990) Jackendoff, R. (1983)