If the righthand dog sled team heads straight toward the camera, and the lefthand team heads at a diagonal to the right.
return dog sled teams ;return #1 that is righthand ;return camera ;return if  #2 heads straight toward #3 ;return #1 that is lefthand ;return if  #5 heads at a  diagonal toward the  right ;return if  both  #4 and #6 are true
['select', 'filter', 'select', 'boolean', 'filter', 'boolean', 'boolean']