Noun
a clause introduced by a relative pronoun
Source: WordNet`who visits frequently' is a relative clause in the sentence `John, who visits frequently, is ill' Source: Internet
Here that is the determiner, rather attractive and young are adjectival pre-modifiers, college is a noun adjunct, student is the noun serving as the head of the phrase, and to whom you were talking is a post-modifier (a relative clause in this case). Source: Internet
Hence, if a neuter relative pronoun is used, the relative clause refers to "bed", and if a masculine pronoun is used, the relative clause refers to "garden". Source: Internet
If the person in the main clause is different from that in the relative clause then this is indicated by with the person in the genitive and the verb is unmarked for person. Source: Internet
If the person performing the action of the verb is the same as the person in the equivalent relative clause, then the verb uses the appropriate personal possessive suffix on the verb for the person. Source: Internet
In the English phrase "a flowerbed in the garden which I maintain" only context tells us whether the relative clause (which I maintain) refers to the whole garden or just the flowerbed. Source: Internet