Can we conclude from "Workmen dressed in orange vests are holding shovels and standing on railroad tracks." that "They are fixing the rails."?\nOptions:\n- yes\n- no\n- it is not possible to tell
Let's be accurate as possible and think first.
it is not possible to tell
Workmen holding shovels and standing on railroad tracks are not necessarily fixing the rails.

.

Final answer: it is not possible to tell