Missed Subject-Verb Agreement (Notional Agreement with Time Units)

I noticed a missed subject-verb agreement error with units of time acting as a singular block.

Example text:
"33 years sound like a career politician from the establishment"

Expected behaviour:
The grammar checker should flag "sound" and suggest "sounds".

Linguistic context:
While "33 years" is grammatically plural, units of time, money, and distance use notional agreement. They represent a single collective block of time and require a singular verb. The software currently fails to treat these quantified plural time phrases as singular subjects.

(Disclaimer: I rewrote my original issue with an AI that knew all the correct terms and how to explain what I spotted with my intuition but didn't know all the technicalities to fully describe.)

No files or tests are named. Start by locating the subject-verb agreement rule and its existing tests, then reproduce the example “33 years sound like a career politician from the establishment.” Done means the checker flags “sound,” suggests “sounds,” and preserves existing agreement behavior.

Written by the indexing model from the issue text.