Premise & hypothesis.
an oil stained sidewalk with a walker next to it

The sidewalk is wide.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
Two workers are working with a tool and attaching an item to stone.

The boy swims in the lake.
++++++++++
true or not.
no

Premise & hypothesis.
Group of runners leaving the starting line of a race.

The runners are starting.
++++++++++
true or not.
yes