Q: "A tan dog is climbing down a pile of concrete rubble." Does this mean that "There is a dog."?
A: yes

Q: "One basketball player is shooting the ball while another one is trying to block his shot." Does this mean that "Two players perform in a playoff game."?
A: it is not possible to tell

Q: "The mother in green is looking at her son while he is crying." Does this mean that "The son is laughing."?
A: no

Q: "Children jumping in a pool surrounded by pool chairs and huts." Does this mean that "The children are swimming."?
A:
yes