<human>: Does "A Polish nobleman living at the time prior to the 15th century was referred to as a "rycerz", very roughly equivalent to the English "knight," the critical difference being the status of "rycerz" was almost strictly hereditary; the class of all such individuals was known as the "rycerstwo"." correctly answer the question of WHat was a polish nobleman referred to as before the 15th century?
OPTIONS:
- yes
- no
<bot>: yes