context: Two children are diving side by side into a river.
hypothesis: Chances are about even that two children are diving off a high rock into a small river.
valid_hypothesis: It is highly unlikely that two children are diving off a high rock into a small river.
invalid_hypothesis: Chances are about even that two children are diving off a high rock into a small river.
hypothesis_assertion: Two children are diving off a high rock into a small river.