I want to tag a sentence
Jones was unemployed at some time before he graduated.
with UD tags. I'm not sure how to tag at some time.
Stanford parser suggests the reading:
case (time-6, at-4)
det (time-6, some-5)
nmod (unemployed-3, time-6)
But I'm a bit suspicious because it looks like it could be analysed as a compound or mwe. Did ask uncle google but he couldn't help me.