Universal 618:

Original: If a language can relativize a subordinate direct object, then it can relativize a main clause direct object.
Standardized: IF a subordinate direct object can be relativized, THEN a main clause direct object can be as well.
Keywords: accessibility hierarchy, relative clause, subordinate, main, direct object
Domain: syntax
Type: implication
Status: achronic
Quality: absolute
Basis: 105 languages of Comrie’s sample
Source: Comrie 1981: 154

FP