Added train and evaluation script

bart/generate_single_query.py

...lc-quad-requeried-linked-test-eval-append-1-10-epochs.txt

.../lc-quad-requeried-linked-test-eval-append-1-2-epochs.txt

...lc-quad-requeried-linked-test-eval-append-1-20-epochs.txt

.../lc-quad-requeried-linked-test-eval-append-1-3-epochs.txt

.../lc-quad-requeried-linked-test-eval-append-1-4-epochs.txt

...d-requeried-linked-test-eval-append-1-large-10-epochs.txt

...ad-requeried-linked-test-eval-append-1-large-3-epochs.txt

...ad-requeried-linked-test-eval-append-1-large-4-epochs.txt

...ad-requeried-linked-test-eval-append-1-large-5-epochs.txt

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

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

data/eval/lc-quad-requeried-linked-test-eval-append-2.txt

data/eval/lc-quad-requeried-linked-test-eval-replace.txt

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

data/eval/lcquad-test-replace-base-0.txt

data/eval/lcquad-test-replace-base-1.txt

data/eval_query.py

data/pred_responses/lcquad-test-replace-base-0.json

data/pred_responses/lcquad-test-replace-base-1.json