Breakdown of Die vom Experten durchgeführte Messung ist genau.
sein
to be
vom
from the (von + dem) / of the (belonging to) / by the (agent in a passive clause)
genau
exactly / precise, exact
der
who, which, that (relative pronoun; die, das)
Questions & Answers about Die vom Experten durchgeführte Messung ist genau.
How would this sentence look if we used a relative clause instead of the extended participle attribute?
It would be: Die Messung, die vom Experten durchgeführt wurde, ist genau. Because durchgeführte is a past participle (Partizip II), the equivalent relative clause usually needs the passive voice (wurde + durchgeführt) to express that the measurement was conducted.
Why is durchgeführte placed right before Messung rather than earlier in the sentence?
In an extended participle attribute, the participle (durchgeführte) acts like an adjective describing the noun (Messung). In German, any extra information modifying that action (like the agent, vom Experten) must get sandwiched exactly between the article (Die) and the participle.
Why does durchgeführte end in -e here?
Because it is functioning as an adjective in front of a noun, it has to take a standard adjective ending. Messung is a feminine noun in the nominative case following a definite article (Die), so it takes the weak ending -e.
Why is it Experten with an -n at the end if it refers to just one expert?