Fix more broken queries

bart/generate_single_query.py

bart/sparql.ipynb

data/eval/lc-quad-requeried-linked-test-eval-append-1.txt

...c-quad-requeried-linked-test-pred_responses-append-1.json

...cted/lc-quad-requeried-linked-test-predicted-append-1.csv

evaluate.ipynb