## Subject
quotation-board boy

## Predicate
operates in

## Object
stock-brokerage office

## Relation Type
actor_venue

## Evidence
"I got a job as quotation-board boy in a stock-brokerage office."

---

## Subject
stock prices

## Predicate
show

## Object
certain habits

## Relation Type
cause_effect

## Evidence
"I noticed that in advances as well as declines, stock prices were apt to show certain habits."

---

## Subject
past performances

## Predicate
guide

## Object
anticipation of movements in prices

## Relation Type
risk_mitigation

## Evidence
"My only guide, as I say, was their past performances."

---

## Subject
tape

## Predicate
is

## Object
telescope

## Relation Type
lesson_evidence

## Evidence
"A battle goes on in the stock market and the tape is your telescope."

---

## Subject
observations

## Predicate
determine

## Object
probable movements

## Relation Type
lesson_evidence

## Evidence
"I was most interested in verifying whether I had observed accurately; in other words, whether I was right."