A JobInstance refers to the concept of [a logical job run].
The phrase "a logical job run" seems to be a noun phrase, due to the presence of the article "a".
And so, "run" is probably the head noun--or functioning as the head of that noun phrase.
Often it is the case that the two modifiers--"logical" and "job"--are either both modifying the word "run" (#A), or else are together a phrase which then modifies the word "run" (#B). That is, it's parsed as one of the following:
Version #A is interpreted as: a "run" that is a "job" (modifier) and that is also "logical" (modifier). That is, "a job run" and "a logical run" should both make sense.
Version #B is interpreted as: a "run" that is a "logical job" (modifier phrase).
There is a third possibility:
- C: "a [logical [job-run]]"
where version #C is interpreted as a "job-run" that is "logical" (modifier). (The hyphen might or might not be optional.)
You would know better than me as to which interpretation is the more reasonable one.
ADDED: Don't let the possibility of "job" being a noun mislead you. For look at the following example, where "brick" is also a noun:
- "a [new [brick [wall]]]" - - [stacked modification]
Here, the head of the noun phrase is "wall". It has two separate modifiers: "new" and "brick". This can be seen due to the acceptability here of the following phrases: "a new wall", "a brick wall", "a wall". And so, the noun "brick" is merely a modifier in "a new brick wall".
Take a look here to read a description of a dangling modifier (which I don't think your query sentence contains).
There is a problem with that sentence, however. This is that the subject is not consistent, and to that extent your teacher was on the right track.
Specifically, one does not go with his or her. To remedy this, you will have to commit yourself to one or the other. Here are the possibilities that would work:
How one learns from these experiences will ultimately determine how fulfilled one's life will be.
How a person learns from these experiences will ultimately determine how fulfilled {his or her / their} life will be.
How someone learns from these experiences will ultimately determine how fulfilled their life will be.
Of these, 1) seems rather old-fashioned today, but both 2) and 3) sound just fine to me.
Best Answer
You have to look at the context to determine what nouns the modifiers are supposed to modify. In this case, the nouns and their modifiers are right next to each other:
The JOIN filter is being applied to both tables. Since "product" already implies that some operation has occurred, we can deduce that the filter was operating on the tables and that the product was the result. What is it filtering? Those rows with joining columns matching. Again, we can deduce that it is the filter that is selecting something, because that is the definition of a filter: selecting some but not all of a collection.
Admittedly, the sentence could be much clearer, e.g.,