Think has a sub-event of solution. Eat watermelon does not have a sub-event of you help someone. Send criminal to prison has a sub-event of you help someone. Read has a sub-event of think. Surf web does not have a sub-event of might need glass. Surf web does not have a sub-event of cause think. Eat watermelon has a sub-event of solution. Wait in line has a sub-event of read. Surf web has a sub-event of find information. Read does not have a sub-event of might need glass. Find information does not have a sub-event of might need glass. Find information has a sub-event of read.
Find information does not have a sub-event of think.