Statements : 1. Most clocks are fans ( red portion in the diagram below)
2. Some fans are walls ( Black portion in the diagram below)
Conclusions: 1. Some walls are fans - true ( black portion in the diagram above). Since some fans are walls so it would be always true.
2. Some clocks are walls - false ( You can see in the diagram, no clock is fan )
By this we can't say some walls are fans
In this all walls are fans and some fans are walls
here 'some' - can be any( not all. or all) numbe but at least one.
no , first one is true - because in your diagrma - "all walls are fan is equivalent to say some walls are fan" because some means- at least one or not all or all.