we took a tour at the Guatemalan farm where the fruit is picked and artificially ripened before shipping 請問本句where 之後的句子主詞和受詞是誰(何謂受詞)?

In grammatical analysis;(1)The main sentence is We took a tour at the Guatemalan farm;(2) where the fruit is picked and artificially ripened before shipping being the dependent or subordinate clause and its subject the fruit ; is picked and
artificially ripened being predicates;because of "is" being the intransitive verb and used without a direct object. Yip

where ....是形容詞子句，修飾先行詞farm。
因為is picked ... and ripened 是「被動態的及物動詞」，所以其主詞fruit在邏輯上是兩個被動態動詞原來的「受詞」。而原來的主詞因為不重要，所以就沒有被以by xxx的方式提及了。
及物動詞的被動態是以「助動詞is/are/was/were＋過去分詞」的方式表示。
受詞包括有「及物動詞」或「介系詞」的受詞。