Q: "Construction workers stand on scaffolding." Does this mean that "Construction workers are on scaffolding."?
A: yes

Q: "A man is using an umbrella." Does this mean that "The man is holding a black umbrella."?
A: it is not possible to tell

Q: "The red lines are slanted." Does this mean that "The red lines are not straight."?
A: yes

Q: "A group of people are walking down a rural street." Does this mean that "A few people are waiting in line at a store."?
A:
no